| Title | Pages | Publication | Code | Date | Publisher | System (Setting) |
|---|
 Wabbit Season | 2004 |  talesofterror.net | | | Self Published | Call of Cthulhu (Now) | |
 The Wages of Sin | | The Wages of Sin | AHC31 | 2019 | Fantasy Flight Games | Arkham Horror: The Card Game | |
 Wagey Cage Shoggoths | Sep 2020 | shoggoth.net | | | Self Published | Call of Cthulhu (Classic) | |
 Wagon Train For the Stars | 133-148 |  Frontier Cthulhu | CHA6041 | 2007 | Chaosium | Call of Cthulhu (Darker Trails) | |
| Wail of the Witch | 15-24 |  Curse of Cthulhu | CHA3306 | 1990 | Chaosium | Call of Cthulhu (Classic) | Massachusetts; 1928 |
| The Wail of the Witch | M1-M7 |  Different Worlds | 30 | Sep 1983 | Chaosium | Call of Cthulhu (Classic) | Massachusetts; 1920s |
 The Waite House | Location (C) |  Limited | CAO1300-1 | 1996 | Chaosium | Mythos | |
| Waiting for the Hurricane | 158-175 | Pulp Cthulhu | CHA23107 | 2016 | Chaosium | Call of Cthulhu (Classic) | Florida; September; 1935; Deep One |
| Waiting to be Born | 96-101 | Fear's Sharp Little Needles | 3005 | 2018 | Stygian Fox | Call of Cthulhu (Now) | Texas |
| Wakalea | Ally (C) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos | |
| Wake the Dead | |  Chaosium Digest | v32n01 | Jul 2000 | Chaosium | Call of Cthulhu (Classic) | October; 1920s |
| Wake the Dead | | Nightscapes | 14 | Aug 2001 | Self Published | Call of Cthulhu (Classic) | October; 1920s |
| Wake the Dead | | RPG Archive | | | Self Published | Call of Cthulhu (Classic) | October; 1920s |
| Wake Up Dead | | More Tales of Terror | PAG2105 | 2000 | Pagan Publishing | Call of Cthulhu (Classic) | |
| Wake Up, Cthulhu! | | Wake Up, Cthulhu! | | 2015 | GDM Games | Wake Up, Cthulhu! | |
| Waking From the Deepest Dream | 140-163 | N | | Nov 2022 | Stygian Fox | None | |
| Walk Among Us | | Walk Among Us | | Aug 2021 | Chaosium | Call of Cthulhu (Classic) | New Orleans |
| A Walk in the Forest Part 1 | 18-? | Polyhedron UK | 7 | 2000 | TSR | Call of Cthulhu (Delta Green) | England |
| A Walk in the Forest Part 2 | 18-? | Polyhedron UK | 8 | 2000 | TSR | Call of Cthulhu (Delta Green) | England |
| A Walk in the Lonely Woods | Adventure (F) | House of Tindalos | | | Self Published | Mythos | |
| A Walk In The Lonely Woods | Adventure (F) | Unofficial Mythos Adventure Archive | | | Self Published | Mythos | |
| A Walk in the Park | 39-55 | Tatters of the King | CHA23104 | 2006 | Chaosium | Call of Cthulhu (Classic) | London; November; 1928 |
| A Walk in the Pines | | A Walk in the Pines | | 2024 | Daylight Publications | dayLITE | |
| A Walk in the Woods | Adventure (F) | Eric Johnson Mythos Collection | | | Self Published | Mythos | |
| Walk the Path | Event (F) | Written and Bound | CT53 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Walk This Hue | 2017 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | Vietnam; February; 1968 |
 Walker in the Wastes Player Aid Kit | | Walker in the Wastes Player Aid Kit | WWPA | 1994 | Pagan Publishing | Call of Cthulhu (Classic) | |
| Walking Stick | Artifact (F) | Rosemary's Baby | | | Self Published | Mythos | |
| Walking the Streets of Arkham | 4-14 | Walking the Streets of Arkham | | Oct 2025 | Chaosium | Call of Cthulhu (Now) | Arkham; 2025; July |
| The Wall of Bones | | Tales of Terror (II) | PAG2102 | 1996 | Pagan Publishing | Call of Cthulhu (Classic) | |
| The Wallmaster | Oct 2014 | shoggoth.net | | | Self Published | Call of Cthulhu (Classic) | |
| Walpurgis Night | 4-26 | Walpurgis Night | | Apr 2025 | Hollow Land | Call of Cthulhu (Strange Aeons) [1666] | Germany; April; 1666 |
| Walter "Walt" Harris | | Sidekicks for Modern Horror - Book 3 | | Sep 2023 | RPG Gamer | Call of Cthulhu (Now) | |
| Walter Fitzpatrick | Character (F) | The Thousand Young | CT65 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Walter Gilman | Character (F) | The Mark of Madness | CT66 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Walter Gilman | Ally (F) | Unofficial Mythos Adventure Archive | | | Self Published | Mythos | |
| Walter's Final Wish | 23-27 | Fear's Sharp Little Needles | 3005 | 2018 | Stygian Fox | Call of Cthulhu (Now) | Ohio |
| Wampus Cats | Oct 2005 | shoggoth.net | | | Self Published | Call of Cthulhu (Classic) | |
| The Wanderer | 28-43 | The Arkham Evil | T-1 | 1983 | Theatre of the Mind Enterprises | Call of Cthulhu (Classic) | Arizona; July; 1923 |
| Wandering | 58-71 | The Sense of the Sleight of Hand Man | APU8001 | 2013 | Arc Dream Publishing | Call of Cthulhu (Dreamlands) | Dreamlands |
| Wandering Dimensional Shambler | Character (U) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wandering Gug | Character (F) | Sleep of the Dead | CT30 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Wandering Inmate | Character (F) | The Horror Beneath the Surface | CT20 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Wandering Minds | |  A Cold Fire Within | CHA23162 | 2019 | Chaosium | Call of Cthulhu (Classic) | 1935 |
| Wandering Peddler | Ally (U) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos | |
| Wandering Souls | 1 | Wandering Souls | | Mar 2026 | Chaosium | Call of Cthulhu (Strange Aeons) [Fantasy World] | Fantasy World |
| Wandering Tinker | Character (F) | Denizens of the Underworld | CT62 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Waning Moon | Event (C) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos | |
| Want Ads | Support (F) | Whispers in the Dark | CT34 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG | |
 Wanted | 24-26 | Nocturnum: Hollow Winds | CC02 | 1998 | Fantasy Flight Games | Call of Cthulhu (Now) | |
| Wanted * | 107-110 | Nocturnum: d20 | CC05 | 2002 | Fantasy Flight Games | Call of Cthulhu (Now) | |
 The War | |  The Yellow King Suite | PELGY10D | 2020 | Pelgrane Press | The Yellow King | |
| War Against the Undead | Adventure (F) | House of Tindalos | | | Self Published | Mythos | |
| War Against the Undead | Adventure (F) | Unofficial Mythos Adventure Archive | | | Self Published | Mythos | |
| War Buddy | 568-583 | 40 Adventures for Call of Cthulhu | | 2002 | Self Published | Call of Cthulhu (Classic) | Maine; 1920s |
| War Buddy | 1-16 | War Buddy | | 1998 | Self Published | Call of Cthulhu (Classic) | Maine; 1920s |
| War Buddy | 29-44 | Opifex Bimonthly | 16 | Nov 1998 | Self Published | Call of Cthulhu (Classic) | Maine; 1920s |
| War Experiences for the 1920s | | Chaosium Digest | v04n02 | Sep 1993 | Chaosium | Call of Cthulhu (Classic) | |
| War from the Stars | | War from the Stars | E1 | 2024 | BRW Games | Adventures Dark and Deep | Fantasy World |
| War Horse | Artifact (R) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos | |
| War of the Outer Gods | | War of the Outer Gods | AHC59 | 2020 | Fantasy Flight Games | Arkham Horror: The Card Game | |
| War of the Spectres | 7-21 | Strange Tales of Dread & Wonder #2 | CHA0330 | 2006 | Chaosium | Call of Cthulhu (Now) | Afghanistan; December; 2001 |
| War on the Doorstep: The Gazetteer of Ireland | 10-13 | Kingdom of the Blind | CHA0359 | 2008 | Chaosium | Call of Cthulhu (Classic) | |
| War to the Knife | | Five Faces of Fear | | Jul 2019 | Chaosium | Call of Cthulhu (Strange Aeons) [Napoleonic] | Spain; 1800s |
| Ward Mansion | Location (U) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos | |
| Ward of Protection | Support (F) | The Mark of Madness | CT66 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Ward Phillips | Character (F) | Sleep of the Dead | CT30 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Warded Flesh | Support (R) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wardens | | Wardens | | 2019 | Raven Tales | Wardens | |
| The Wardian Case | 132-134 | Lovecraftesque | | 2016 | Black Armada Games | Lovecraftesque | Massachusetts; December; 1844 |
 Ware the Moon | |  Dagon | 8 | Jul 1985 | Self Published | Call of Cthulhu (Classic) | |
| A Warehouse on the Docks | | Cthulhu Maps - A Warehouse on the Docks | 067 | 2022 | Lovemaps | Call of Cthulhu (Classic) | |
| Warping of Time | Event (R) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Warrant Officer | Character (F) | For the Greater Good | CT64 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG | |
| The Warren | 63-70 | Cthulhu Classics | CHA3301 | 1989 | Chaosium | Call of Cthulhu (Classic) | Massachusetts; 1921; Lesser Race |
| The Warren | 140-150 | Shadows of Yog-Sothoth | CHA2397 | 2004 | Chaosium | Call of Cthulhu (Classic) | Massachusetts; 1921; Lesser Race |
| The Warren | 65-72 | Shadows of Yog-Sothoth | CHA2010 | 1982 | Chaosium | Call of Cthulhu (Classic) | Massachusetts; 1921; Lesser Race |
| The Warrens | Support (F) | Lost Rites | CT56 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Wartime DC | 223-240 | Cthulhu Confidential | PELGOC01 | 2016 | Pelgrane Press | Cthulhu Confidential | |
| Wartime London | 38-74 | World War Cthulhu: London | CB71941 | 2016 | Cubicle 7 | Call of Cthulhu (WWII) | |
| Wasted Youth | 29-46 | New Tales of the Miskatonic Valley | MRP0003 | 2008 | Miskatonic River Press | Call of Cthulhu (Classic) | Arkham |
| Wasted Youth | 29-52 | New Tales of the Miskatonic Valley | 3009 | 2020 | Stygian Fox | Call of Cthulhu (Classic) | Arkham |
| Wasteland | | Tales of Terror (I) | | 1990 | Pagan Publishing | Call of Cthulhu (Classic) | France |
| Wasteland | 22-23 | Tales of Terror (III) | | | Self Published | Call of Cthulhu (Classic) | France |
| Wasteland | 1990 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | France |
| Watch Out! The Willowaw | Adventure (F) | Scooby Doo Adventures | | | Self Published | Mythos | |
| Watcher in the Bayou | 1-17 | Dwellers in Shadow | 0004 | Jul 1996 | Triad Entertainments | Call of Cthulhu (Classic) | Louisiana |
| Watcher in the Valley | 51-75 | Tales of the Miskatonic Valley | CHA2334 | 1991 | Chaosium | Call of Cthulhu (Classic) | Massachusetts; Lloigor |
| Watcher of Signs | Character (F) | The Sleeper Below | CT63 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Watcher of the Woods | Character (U) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Watcher of the Woods | Character (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG | |
| The Watcher Out of Time | 124-144 | Goatswood and Less Pleasant Places | CHA2393 | 2001 | Chaosium | Call of Cthulhu (Now) | England; Daoloth |
| The Watchers | 61 | The Unspeakable Oath | 23 | Aug 2013 | Pagan Publishing | Call of Cthulhu (Classic) | |
| The Watchers | 87-97 | Occam's Razor | | 2021 | Stygian Fox | Call of Cthulhu (Now) | |
| The Watchers Below | 121-146 | The Curse of Nineveh | CB7355 | 2015 | Cubicle 7 | Call of Cthulhu (Classic) | London; February; 1926 |
| The Watchers in the Sky | 5-33 | The Watchers in the Sky | PELGT11 | 2010 | Pelgrane Press | Trail of Cthulhu | England |
| The Watchers in the Sky | 46-72 | The Final Revelation | PELGT33 | 2013 | Pelgrane Press | Trail of Cthulhu | England |
| The Watchers in the Sky | | The Purist Adventures | PELGB4 | 2010 | Pelgrane Press | Trail of Cthulhu | England |
| The Watchers of Easter Island | 46-57 | Cthulhu Classics | CHA3301 | 1989 | Chaosium | Call of Cthulhu (Classic) | Oceania; 1920s; Deep One |
| The Watchers of Easter Island | 105-125 | Shadows of Yog-Sothoth | CHA2397 | 2004 | Chaosium | Call of Cthulhu (Classic) | Oceania; 1920s; Deep One |
| The Watchers of Easter Island | 46-57 | Shadows of Yog-Sothoth | CHA2010 | 1982 | Chaosium | Call of Cthulhu (Classic) | Oceania; 1920s; Deep One |
| The Watchers of Walberswick | 4-6 | White Dwarf | 50 | Feb 1984 | Games Workshop | Call of Cthulhu (Classic) | England; 1934 |
| The Watchers of Walberswick | 4-6 | The Best of White Dwarf III | | 1985 | Games Workshop | Call of Cthulhu (Classic) | |
| Watchful Naturalist | Character (F) | Lost Rites | CT56 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Water Colour | Character (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Water Town | | The Way It Went Down | | 2018 | Arc Dream Publishing | Delta Green | |
| Waterbury State Hospital | Location (F) | Unlimited | CAO1306-1 | 1997 | Chaosium | Mythos | |
| The Watercolor Institute | 41-49 | Whispers of the Dead | 2 | Apr 2022 | Staggered Amusement Machine | Delta Green | |
| A Waterfall in the Jungle | | Cthulhu Maps - A Waterfall in the Jungle | 035 | 2022 | Lovemaps | Call of Cthulhu (Classic) | |
| A Waterfall in the Jungle | | Cthulhu Maps - A Waterfall in the Jungle | 122 | Nov 2024 | Lovemaps | Call of Cthulhu (Classic) | |
| Watering Hole | 58-63 | Minions | CHA2365 | 1997 | Chaosium | Call of Cthulhu (Classic) | |
| Waters Dark and Deep | | plateau-of-leng.demon.co.uk | | | Self Published | Call of Cthulhu (Delta Green) | Massachusetts; November; 1995 |
| The Waters of Sulis | 113-114 | Avalon - The County of Somerset | CB7352 | 2010 | Cubicle 7 | Call of Cthulhu (Classic) | England; Great Old One |
| The Waters Over Heaven | | Cthulhu Hardboiled Campaign | | | Self Published | Call of Cthulhu (Classic) | Los Angeles; 1928; January |
| The Waters Over Heaven | | The Waters Over Heaven | | 2003 | Self Published | Call of Cthulhu (Classic) | Los Angeles; January; 1928 |
| Watkins Family Plot | Support (R) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Watkins Root Cellar | Support (U) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| The Wave Function | Event (R) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wave of Oblivion | Spell (R) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos | |
| Waves to Vistas Unknown | | Waves to Vistas Unknown | | Jul 2024 | Chaosium | Call of Cthulhu (Now) | Canada; September; 2024 |
| Wax Museum | Location (F) | Scooby Doo Set 3 | | | Self Published | Mythos | |
| The Wax Phantom | Monster (F) | Scooby Doo Set 3 | | | Self Published | Mythos | |
| Wax Works | Location (F) | Scooby Doo Set 3 | | | Self Published | Mythos | |
| Waxen Mask | Artifact (F) | Antarctica | | | Self Published | Mythos | |
| Waxing Moon | Event (C) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos | |
| The Way | 13-30 | The Cruel Empire of Tsan Chan | CHA0397 | 2010 | Chaosium | Call of Cthulhu (Strange Aeons) [5000AD] | |
| Way Down. In Ioway. | 56-73 | Halloween Horror 2 | CHA0333 | 2006 | Chaosium | Call of Cthulhu (Classic) | Iowa; 1920s; Halloween |
| Way of Life | 10-12 | The London Guidebook | CHA2347 | 1996 | Chaosium | Call of Cthulhu (Classic) | |
| The Way of the Future | 106-115 | CthulhuTech | WDF23000 | 2007 | WildFire Games | CthulhuTech | |
| The Wayang Theatre | Aug 2010 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | |
| Wayward Sons | 7-9 | Dark Passions | WDF23200 | 2008 | WildFire Games | CthulhuTech | |
| Wayward Tunnels | 2023 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | Colorado |
| We All Go Mi-Go!!! | | We All Go Mi-Go!!! | | Aug 2024 | Chaosium | Call of Cthulhu (Classic) | Vermont; 1920s |
| We Are All Savages | | We Are All Savages | | Dec 2019 | Chaosium | Call of Cthulhu (Strange Aeons) [1760] | Ohio; January; 1760 |
| We Don't Talk Like We Used To | 2021 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | |
| We Dream of Flying | 3-9 | We Dream of Flying | | Aug 2023 | Chaosium | Call of Cthulhu (Now) | Pacific Ocean |
| We Have Been, We Are, We Will Be | | We Have Been, We Are, We Will Be | SFX-3003 | 2018 | Stygian Fox | Call of Cthulhu (Classic) | |
| We Have Met the Enemy | 122-137 | Mortal Coils | PAG1007 | 1998 | Pagan Publishing | Call of Cthulhu (Classic) | Massachusetts; 1926; June |
| "We Missed You," Hissed the Love Cats | 23-26 | The Whisperer | 4 | Spr 2001 | Severn Valley Press | Call of Cthulhu (Dreamlands) | Dreamlands |
| We Must Secure the Existence of Our People and A Future for White Ape Children | 2020 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | Washington |
| We Were Not the First, A Suicide Rant | | The Way it Went Down Volume 2 | APU8013 | Apr 2023 | Arc Dream Publishing | Delta Green | |
 We Will Bury You | | Serena's Dojo | | 1999 | Self Published | Mythos | |
| We Will Remember Them | 62-80 | World War Cthulhu: Europe Ablaze | CB71940 | 2014 | Cubicle 7 | Call of Cthulhu (WWII) | Norway; 1942 |
| We're Here for Your Amusement | 43- | Dreadful Mistakes Volume 1 | | 2020 | Four Guys and a Broken Dwarf | Call of Cthulhu (Classic) | |
| Wealth | 48-51 | Beta Maxxthulhu | BMT.AE | 2018 | Halfling Caravan Games | Beta Maxx | |
| Wealth | 16-21 | Mythos World | MW001 | 2015 | Diceless Hero Games | Mythos World | |
| Wealth and Equipment | 78-101 | Raiders of R'lyeh | | 2017 | Cipher Bureau | Raiders of R'lyeh | |
| Wealth and Equipment | 108-139 | Raiders of R'lyeh Gamemaster's Guide and Complete Rules | | 2017 | Cipher Bureau | Raiders of R'lyeh | |
| A Wealth of Knowledge | | A Wealth of Knowledge | | May 2019 | Chaosium | Call of Cthulhu (Classic) | Arkham |
| Wealthy Sponsor | Character (F) | Initiations of the Favored | CT42 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Weapon Game Stats | 47-53 | Investigator Weapons Volume 2: Modern Day | 60-IHB02 | 2015 | Sixtystone Press | Call of Cthulhu (Now) | |
| Weapon Game Stats | 34-41 | Investigator Weapons Volume 3: Gaslight Era | 60-IHB03 | Jan 2023 | Sixtystone Press | Call of Cthulhu (Gaslight) | |
| Weapon Quick Reference Tables | 50-53 | The Interstellar Colonial Marine Corps | | 2008 | Self Published | Call of Cthulhu (Rising) | |
| Weaponised Relic - Arnimor DUAL final plus | 6-22 | Weaponised Relic - Arnimor DUAL final plus | | 2012 | Self Published | CthulhuTech | 2064 |
| Weapons | B:22-24 |  Call of Cthulhu | CHA2301-X | 1983 | Chaosium | Call of Cthulhu (Classic) | |
| Weapons | 113-115 | Call of Cthulhu | CHA2317-H | 1986 | Chaosium | Call of Cthulhu (Classic) | |
| Weapons | C:22-24 | Call of Cthulhu | CHA2009-X | 1981 | Chaosium | Call of Cthulhu (Classic) | |
| Weapons | 39-40 | Don't Let Them Take You Alive | | 2017 | First United Church of Cthulhu | Don't Let Them Take You Alive | |
| Weapons | 146-148 | Call of Cthulhu | CHA2324 | 1989 | Chaosium | Call of Cthulhu (Classic) | |
| Weapons and Accessories | 111-116 | The Gaslight Equipment Catalogue | CHA0319 | 2005 | Chaosium | Call of Cthulhu (Gaslight) | |
| Weapons and Artifacts | | Weapons and Artifacts Deck | CHA23139-KD4 | 2016 | Chaosium | Call of Cthulhu (Classic) | |
| Weapons and Artifacts | | Keeper Decks | CHA23139-KD | 2016 | Chaosium | Call of Cthulhu (Classic) | |
| Weapons and Artifacts | | Keeper Decks | CHA23184 | Sep 2024 | Chaosium | Call of Cthulhu (Classic) | |
| Weapons and Artifacts | | Weapons and Artifacts Deck | CHA23184-KD4 | Sep 2024 | Chaosium | Call of Cthulhu (Classic) | |
| Weapons and Equipment | 17-21 | Dark Crusades | CHA0414 | 2013 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Weapons and Equipment | 13-28 | As Above, So Below | CB71209 | 2015 | Cubicle 7 | Call of Cthulhu (Laundry) | |
| Weapons and Equipment | 81-98 | World War Cthulhu: The SOE Handbook | CB71942 | 2015 | Cubicle 7 | Call of Cthulhu (WWII) | |
| Weapons and Gear | 44-50 | Guide to the Eastern Front | MUH01053CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
| Weapons and Relics Art Pack | | Weapons and Relics Art Pack | | Dec 2017 | Chaosium | Call of Cthulhu (Classic) | |
| Weapons and the Law | 32-46 | Investigator Weapons Volume 2: Modern Day | 60-IHB02 | 2015 | Sixtystone Press | Call of Cthulhu (Now) | |
| Weapons and the Law | 26-33 | Investigator Weapons Volume 3: Gaslight Era | 60-IHB03 | Jan 2023 | Sixtystone Press | Call of Cthulhu (Gaslight) | |
| Weapons Guide | | Weapons Guide | | 2012 | Stardust Publications | Dark Aeons | |
| The Weapons of Hudson and Brand | 88-94 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| Weapons Used During the Sudan Wars | 29-31 | Mysteries of Sudan | CHA0362 | 2009 | Chaosium | Call of Cthulhu (Gaslight) | |
| Weaver of the Cosmos | | Weaver of the Cosmos | AHC44 | 2020 | Fantasy Flight Games | Arkham Horror: The Card Game | |
| The Weaver: a Mi-Go Device | Oct 2020 | shoggoth.net | | | Self Published | Call of Cthulhu (Classic) | |
| The Weaving of Three | 35-55 | Nocturnum: Deep Secrets | CC03 | 1999 | Fantasy Flight Games | Call of Cthulhu (Now) | Denmark |
| The Weaving of Three * | 197-216 | Nocturnum: d20 | CC05 | 2002 | Fantasy Flight Games | Call of Cthulhu (Now) | Denmark |
| Web of Memory | 33-45 | Whispers in the Dark | 0003 | Oct 1993 | Triad Entertainments | Call of Cthulhu (Now) | San Francisco |
| Web of Shadows | 5-28 | Web of Shadows | YH-C-10 | Aug 2025 | Chaosium | Call of Cthulhu (Now) | Nevada; Atlach-Nacha |
| A Wee Dram of Danger | 48-53 | The Adventurer | 5 | Dec 1986 | Mersey Leisure Publishing | Call of Cthulhu (Classic) | Scotland; 1923; September |
| The Weekend Retreat | | The Weekend Retreat | | | Drakat Games | Call of Cthulhu (Classic) | |
| Weeping Grandchild: A Taint of Shub-Niggurath | Oct 2017 | shoggoth.net | | | Self Published | Call of Cthulhu (Classic) | |
| The Weeping Madonna | | Tales of Terror (II) | PAG2102 | 1996 | Pagan Publishing | Call of Cthulhu (Classic) | |
| The Weight of the Water | | The Way It Went Down | | 2018 | Arc Dream Publishing | Delta Green | |
| Weird and Cosmic Horror Ref | | Weird and Cosmic Horror Ref | | 2021 | Self Published | None | |
| The Weird and the Wonderful | 70-87 | Guide to the Eastern Front | MUH01053CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
| Weird Characters | 92-97 | Agent's Handbook | CB71203 | 2011 | Cubicle 7 | Call of Cthulhu (Laundry) | |
| Weird of the White Sybil | | Deepest, Darkest Eden | MRP0025 | 2013 | Miskatonic River Press | None | |
| The Weird Shadow Over Innsmouth | 1-51 | Tales out of Innsmouth | CHA6024 | 2006 | Chaosium | Call of Cthulhu (Classic) | |
| Weird, Eldritch Creature Name Generator | | Weird, Eldritch Creature Name Generator | | 2019 | Azukail Games | None | |
| Welcome | 12-31 | Weird Frontiers | | 2021 | Stiff Whiskers Press | Weird Frontiers | |
| Welcome Aboard | 1:30 | Horror on the Orient Express Music | AOCD7004 | 2005 | A O Music | Call of Cthulhu (Classic) | |
| A Welcome in the Hills | 1-16 | A Welcome in the Hills | | 2008 | Self Published | Call of Cthulhu (Now) | Wales; 2007 |
| Welcome to Arkham | 27-35 | H.P. Lovecraft's Arkham | CHA8803 | 2003 | Chaosium | Call of Cthulhu (Classic) | |
| Welcome to Arkham | 6-11 | Arkham Now | CHA23116 | 2009 | Chaosium | Call of Cthulhu (Now) | |
| Welcome to Atlantis | 5-14 | Shadows of Atlantis | MUH051747 | 2022 | Modiphius Entertainment | Achtung! Cthulhu | |
| Welcome to Cohors Cthulhu | 4-5 | Cohors Cthulhu Quickstart Guide | MUH0860101 | Jul 2023 | Modiphius Entertainment | Cohors Cthulhu | |
| Welcome to Cohors Cthulhu: Tactics | 6-25 | Cohors Cthulhu: Tactics Prologue | MUH1500101 | May 2024 | Modiphius Entertainment | Cohors Cthulhu | |
| Welcome to Delta Green | 4-9 | Need to Know | APU8106 | 2016 | Arc Dream Publishing | Delta Green | |
| Welcome to Dunwich | 14-21 | Return to Dunwich | CHA2330 | 1991 | Chaosium | Call of Cthulhu (Classic) | |
| Welcome to Dunwich | 27-36 | H.P. Lovecraft's Dunwich | CHA8802 | 2002 | Chaosium | Call of Cthulhu (Classic) | |
| Welcome to Innsmouth | 13-14 | Escape from Innsmouth | CHA2338 | 1992 | Chaosium | Call of Cthulhu (Classic) | |
| Welcome to Innsmouth | 13-14 | Escape from Innsmouth | CHA2371 | 1997 | Chaosium | Call of Cthulhu (Classic) | |
| Welcome to Kingsport | 1-3 | Kingsport: The City in the Mists | CHA2333 | 1991 | Chaosium | Call of Cthulhu (Classic) | |
| Welcome to Kingsport | 19-22 | H.P. Lovecraft's Kingsport | CHA8804 | 2003 | Chaosium | Call of Cthulhu (Classic) | |
| Welcome to Little Creek | | Welcome to Little Creek | | Apr 2023 | Chaosium | Call of Cthulhu (Classic) | Massachusetts; 1920; June |
| Welcome to Lovecraft Country | 1-13 | Welcome to Lovecraft Country | | 2012 | Self Published | Fiasco Classic | |
| Welcome to Milton Keynes | 45-52 | Introduction to Applied Occult Computing | CB70803 | Jun 2025 | Cubicle 7 | The Laundry | |
| Welcome to North Africa | 3-10 | Guide to North Africa | MUH01052CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
| Welcome to Rome | 6-19 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic) | |
| Welcome to Silkwood Motel | 3-5 | Welcome to Silkwood Motel | | Feb 2026 | Chaosium | Call of Cthulhu (Classic) | United States |
| Welcome to th Secret War | 3-9 | Fate Investigator's Guide to the Secret War | MPS01031F | 2014 | Modiphius Entertainment | Fate | |
| Welcome to the Abyss | | Cthulhu Unleashed | | Mar 2024 | Vindicta RPGs | Cthulhu Unleashed | |
| Welcome to the Arkham Cycle | 9-14 | Macabre Tales | SG-MT1 | 2011 | Spectrum Games | Macabre Tales | |
| Welcome to the Eastern Front | 3-15 | Guide to the Eastern Front | MUH01053CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
| Welcome to the Future | 5-7 | Interface 19.40 | MUH050027AC | 2015 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!), Interface Zero | |
| Welcome to the Island | 2018 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | Canada |
| Welcome to the Kraven-Hammer Mall | | Welcome to the Kraven-Hammer Mall | | Mar 2024 | Chaosium | Call of Cthulhu (Now) | Illinois |
| Welcome to the Occult Wars | 3-5 | Don't Let Them Take You Alive | | 2017 | First United Church of Cthulhu | Don't Let Them Take You Alive | |
| Welcome to the Pacific | 3-16 | Guide to the Pacific Front | MPS01051CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
| Welcome to the Secret War | 3-9 | Investigator's Guide to the Secret War | MPS01031CS | 2013 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
| Welcome To The Spirit World | 8-9 | Ripper Fhtagn | | 2020 | Self Published | The Jack Hack | |
| Welcome to the University | 1-3 | Miskatonic University | CHA2352 | 1995 | Chaosium | Call of Cthulhu (Classic) | |
| Welcome to the World's Fair | | Cthulhu Maps - Welcome to the World's Fair | 068 | 2022 | Lovemaps | Call of Cthulhu (Classic) | |
| Welcome! | 13-20 | The Cairo Guidebook | CHA2351 | 1995 | Chaosium | Call of Cthulhu (Classic) | |
| The Well | 584-594 | 40 Adventures for Call of Cthulhu | | 2002 | Self Published | Call of Cthulhu (Now) | England; 1990s |
| The Well | 1-11 | The Well | | 1999 | Self Published | Call of Cthulhu (Now) | England; 1990s |
| The Well | Story (F) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| The Well | Story (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| The Well | 11-24 | Opifex Bimonthly | 14 | Jul 1998 | Self Published | Call of Cthulhu (Now) | England; 1990s |
| The Well | Story (F) | Secrets of Arkham | CT32 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG | |
| The Well of All Fear | | The Well of All Fear | | May 2023 | Chaosium | Call of Cthulhu (Regency) | England; April; 1813 |
| Well of Rhagorthua, Powell, New Mexico | 33 | A Handful of Dust | | 2003 | Pagan Publishing | Call of Cthulhu (Atomic) | New Mexico; 1945; July |
| The Well of Sacrifice | 86-105 | The Mysteries of Mesoamerica | PAG1012 | 2009 | Pagan Publishing | Call of Cthulhu (Classic) | Mexico; May; 1914 |
| The Well of St Warna | | It Came From Cthulhu | | 2012 | Planet Pulp Productions | Pulp Adventure | |
| Well of the Black Heart | 71-82 | Templa Illuminatus | | Jan 2024 | Chaosium | Call of Cthulhu (Classic) | Europe |
| A Well Respected Man | Dec 2008 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | |
| The Well-Rounded Monster Hunter | 32-34, 36 | Dragon | 150 | Oct 1989 | TSR | Call of Cthulhu (Classic) | |
| The Wendigo | 39-40 | Serendipity's Circle | 6 | Win 1995 | Self Published | Call of Cthulhu (Classic) | |
| Wendigo | | Ken Writes About Stuff | v3n5 | Jul 2015 | Pelgrane Press | Trail of Cthulhu | |
| The Wendigo | 1-39 | The Ithaqua Cycle | CHA6021 | 1998 | Chaosium | Call of Cthulhu (Classic) | |
| Wendigo Hunt | 1-19 | Wendigo Hunt | | Apr 2023 | Chaosium | Call of Cthulhu (Classic) | Minnesota; 1920 |
| Wendigo Psychosis | 32-33 | The Unspeakable Oath | 13 | Jan 1996 | Pagan Publishing | Call of Cthulhu (Classic) | |
| Wentshukumishiteu | Character (F) | The Key and the Gate | CT60 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Wereboar | Oct 2020 | shoggoth.net | | | Self Published | Call of Cthulhu (Classic) | |
| Werewolf | Monster (U) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos | |
| Werewolf | Character (U) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Werewolf Gimmick | 2021 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | |
| The Werewolf of Averoigne | 98-114 | The KarkAsh-Ton Cycle | CHA6046 | 2008 | Chaosium | Call of Cthulhu (Classic) | |
| Werewolf Root Canal | | Mark of the Beast | CHA6062 | 2016 | Chaosium | Call of Cthulhu (Classic) | |
| The Wernicke Boxes | | The Wernicke Boxes | | Apr 2019 | Chaosium | Call of Cthulhu (Classic) | Europe |
| Wes Herbert | Ally (F) | Sesqua Valley | | | Self Published | Mythos | |
| West's Nurses | Oct 2022 | shoggoth.net | | | Self Published | Call of Cthulhu (Classic) | |
| Westchester House | 74-80 | The Asylum | CHA2012 | 1983 | Chaosium | Call of Cthulhu (Classic) | California; 1920s |
| The Westchester House | 113-120 | Secrets of San Francisco | CHA23108 | 2006 | Chaosium | Call of Cthulhu (Classic) | San Francisco |
| Westchester House | 68-74 | Cthulhu Casebook | CHA3305 | 1990 | Chaosium | Call of Cthulhu (Classic) | California; 1920s |
| Western State Hospital | Location (F) | Seattle | | | Self Published | Mythos | |
| The Westfield Incident | 4-23 | Bumps in the Night | PAG1014 | 2012 | Pagan Publishing | Call of Cthulhu (Classic) | New York State; May; 1915; Vampire |
| Westhaven | 52-69 | Campfire Tales | CHA23193 | Apr 2026 | Chaosium | Call of Cthulhu (Classic) | |
| What a Night for a Knight | Adventure (F) | Scooby Doo Adventures | | | Self Published | Mythos | |
| What do Cat Adventures Look Like? | 37-38 | Cathulhu | 60-KAT01 | 2014 | Sixtystone Press | Call of Cthulhu (Catthulhu) | |
| What Do You Do? | | The Way It Went Down | | 2018 | Arc Dream Publishing | Delta Green | |
| What Dreams May Come | | Ye Booke of Tentacles | 6 | 2006 | The Chaos Society | Call of Cthulhu (Classic) | |
| What Dreams May Come | | Puncture Wounds | SFX-4000 | Aug 2018 | Stygian Fox | None | |
| What Goes Around, Comes Around | 106-131 | Out of the Vault | PAG1009 | 2002 | Pagan Publishing | Call of Cthulhu (Classic) | New Hampshire; July; 1925; Outer God |
| What Goes Around, Comes Around | 124-148 | The Unspeakable Oath | 8/9 | Jun 1993 | Pagan Publishing | Call of Cthulhu (Classic) | New Hampshire; July; 1925; Outer God |
| What Goes Around? | 29-42 | The Unbound Book | 0 | Aug 2002 | Unbound Publishing | Call of Cthulhu (Classic) | Arkham; Winter; 1921 |
| What Grows Within | 4-55 | What Grows Within | PZO90113 | 2016 | Paizo Publishing | Pathfinder | Fantasy World |
| What if Erica Carlyle Decides to Sell Roger's Books? | 102-104 | The Masks of Nyarlathotep Companion (Unlimited) | 60-MONC-03 (?) | 2016 | Sixtystone Press | Call of Cthulhu (Classic) | New York; 1925 |
| What if Erica Carlyle Decides to Sell Roger's Books? | 112-115 | The Masks of Nyarlathotep Companion (Limited) | 60-MONC-08 | 2016 | Sixtystone Press | Call of Cthulhu (Classic) | New York; 1925 |
| What is Achtung! Cthulhu? | 4-5 | Quickstart Rules and Adventure | MUH051745 | 2021 | Modiphius Entertainment | Achtung! Cthulhu | |
| What is an Agent? | 10-31 | Need to Know | APU8106 | 2016 | Arc Dream Publishing | Delta Green | |
| What is Cthulhu Unleashed | | Cthulhu Unleashed | | Mar 2024 | Vindicta RPGs | Cthulhu Unleashed | |
| What is TechnoFear? | 3-4 | Serendipity's Circle | 1 | Jan 1995 | Self Published | None | |
| What is TechnoFear? | 6 | Serendipity's Circle | S1 | 1995 | Self Published | None | |
| What is the 2d20 System? | 4 | Achtung! Cthulhu Basic Rules | MUH0010342 | 2023 | Modiphius Entertainment | Achtung! Cthulhu | |
| What is the Call of Cthulhu? | B:3-6 | Call of Cthulhu Starter Set | CHA23158-X | 2018 | Chaosium | Call of Cthulhu (Classic) | |
| What is the Call of Cthulhu? | B:3-6 | Call of Cthulhu Starter Set | CHA23178-X | 2021 | Chaosium | Call of Cthulhu (Classic) | |
| What is this Book? | 2-10 | A Peculiar Pentad | OWC4006 | 2009 | Super Genius | Call of Cthulhu (Classic) | |
| What is this Book? | | A Peculiar Pentad | | 2011 | Super Genius | Savage Worlds (Realms of Cthulhu) | |
| What is this Campaign Setting? | 8-9 | Campo de Mitos | | 2020 | Mindscape Publishing | Call of Cthulhu (Classic) | |
| What Lies Beneath the Skin | | What Lies Beneath the Skin | | Jan 2021 | Chaosium | Call of Cthulhu (Gaslight) | London |
| What Lies Beyond? | | What Lies Beyond? | SP1004 | 2011 | Stardust Publications | Dark Aeons | Arkham |
| What Lurks Below | Dec 2007 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | Connecticut |
| What Rough Beast | 7-47 | What Rough Beast | | Dec 2021 | Chaosium | Call of Cthulhu (Classic) | Alabama; 1929; Spring |
| What Shall I Do to Shun the Snares of Death | 1-49 | What Shall I Do to Shun the Snares of Death | | 2011 | Self Published | Call of Cthulhu (Invictus), Call of Cthulhu (Delta Green) | |
| What The Deities Mean | 34-39 | The Unspeakable Oath | 10 | Jan 1994 | Pagan Publishing | Call of Cthulhu (Classic) | |
| What the Fu?! | | What the Fu?! | | Oct 2021 | Chaosium | Call of Cthulhu (Now) | Malaysia |
| What the Keeper Does | 36-39 | Soth | | 2015 | Self Published | Soth | |
| What the Keeper Does: Invisible Actions | 40-54 | Soth | | 2015 | Self Published | Soth | |
| What the Keeper Does: Visible Actions | 55-68 | Soth | | 2015 | Self Published | Soth | |
| What the Moonlight Brought | | Further Tales of Cthulhu Invictus | GGP | 2017 | Golden Goblin Press | None | |
| What the Sea Gives Up | | Goat Mother | CHA6060 | 2015 | Chaosium | Call of Cthulhu (Classic) | |
| What the Voice Said | | The Way It Went Down | | 2018 | Arc Dream Publishing | Delta Green | |
| What They Saw There | 153-158 | Tiny Cthulhu | GKG-071 | 2021 | Gallant Knight Games | Tiny Cthulhu | |
| What Waits in Darkness | | What Waits in Darkness | GOM-6 | Jan 2026 | Siegbreaker Games | Gateways Into Madness | September; 2026 |
| What You Need | 3-4 | Convicts and Cthulhu Quickstart Rules | cr6301 | Sep 2025 | Cthulhu Reborn | Cthulhu Eternal | |
| What You Need | 3-4 | Eldritch Horizon Quickstart Rules | cr6501 | Nov 2025 | Cthulhu Reborn | Cthulhu Eternal | |
| What You Should Know About the Tommy Gun | 43-47 | The Unspeakable Oath | 14/15 | 1997 | Pagan Publishing | Call of Cthulhu (Classic) | |
| What's All This Then? Law Enforcement in the Victorian Era | | The Familiar | 5 | Aug 1995 | Self Published | Call of Cthulhu (Gaslight) | |
| What's in the Cellar | | Gateways to Terror | CHA23140 | 2019 | Chaosium | Call of Cthulhu (Classic) | |
| What's in the Cellar? | | What's in the Cellar? | | 2017 | Chaosium | Call of Cthulhu (Classic) | New York State; 1929 |
| What's it Worth to Ya? | 21-26 | Cephalophobia | 1 | Mar 2014 | Miskatonic University Podcast | Call of Cthulhu (Classic) | |
| What?s Your Name | | The Way It Went Down | | 2018 | Arc Dream Publishing | Delta Green | |
| Whateley World News | | Serena's Dojo | | 1999 | Self Published | Mythos | |
| Whateley's Diary | Support (F) | Dunwich Denizens | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Whateley's Diary | Support (F) | Dunwich Denizens | CT15e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG | |
| The Whateleys Go A'Swimmin' | | Robo's Mythos CCG Web Page | | | Self Published | Mythos | |
| The Whateleys Go A'Swimmin' | | A Web Page from a Friend | | | Self Published | Mythos | |
| The Whateleys Move In | | Chaosium Digest | v21n04 | Aug 1997 | Chaosium | Mythos | |
| The Whateleys Move In | | Robo's Mythos CCG Web Page | | | Self Published | Mythos | |
| The Whateleys Move In to Arkham | | A Web Page from a Friend | | | Self Published | Mythos | |
| Whatever Happened to Alicia Thorne? | | Whatever Happened to Alicia Thorne? | FXC-13 | 2020 | Stygian Fox | Call of Cthulhu (Now) | Maine |
| The Wheel of Fortune | | Nightscapes | 7 | Apr 1998 | Self Published | Call of Cthulhu (Now) | New York; 1990s |
| Wheeling, WV | | Hometown Horrors Volume One | | Jul 2022 | Chaosium | Call of Cthulhu (Now) | |
| Wheelman | Support (F) | Denizens of the Underworld | CT62 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG | |
| WHEL | | Chaosium Digest | v18n12 | Apr 1997 | Chaosium | Call of Cthulhu (Now) | |
| WHEL | 49-50 | Tales of Terror (III) | | | Self Published | Call of Cthulhu (Now) | |
| WHEL | 1997 | talesofterror.net | | | Self Published | Call of Cthulhu (Now) | |
| WHEL | Feb 1997 | rpg.net | | | Self Published | Call of Cthulhu (Now) | |
| When Angels Weep | | When Angels Weep | | Dec 2022 | Chaosium | Call of Cthulhu (Classic) | New York; 1920s |
| When At First You Don't Succeed? | 55 | Dark Passions | WDF23200 | 2008 | WildFire Games | CthulhuTech | |
| When Badgers Attack | 63 | Protodimension | 1 | Sum 2009 | Kinstaff Media | Call of Cthulhu (Now) | |
| When Darkness Falls | 140-191 | The Realm of Shadows | PAG1006 | 1997 | Pagan Publishing | Call of Cthulhu (Classic) | French Guiana; 1940s; Ghoul |
| When Evil Wins | Mar 2019 | Reckoning of the Dead | | | Self Published | Call of Cthulhu (Now) | |
| When Iatrophobia Can be Cured | | Chaosium Digest | v23n06 | Mar 1998 | Chaosium | Mythos | |
| When in Rome, Do as the Romans | | The Sassoon Files | SOS-HORROR4 | Jun 2025 | Sons of the Singularity | Call of Cthulhu (Classic) | Singapore; 1920s |
| When Johnny Came Marching Home | 20-23 | The Island of Ignorance | GGP1301 | 2013 | Golden Goblin Press | Call of Cthulhu (Classic) | |
| When Sleigh Bells Ring | Dec 2019 | Reckoning of the Dead | | | Self Published | Call of Cthulhu (Now) | December; Insect from Shaggai |
| When the Boat Comes In | 2021 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | England; Deep One |
| When the Greys Pushed Back | 2014 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | |
| When the Light Goes Out | | When the Light Goes Out | | Feb 2019 | Chaosium | Call of Cthulhu (Now) | Oregon |
| When the Stars Come Right Again | 122-128 | The Stars Are Right! | CHA2337 | 1992 | Chaosium | Call of Cthulhu (Now) | |
| When the Stars Come Right Again | 168-175 | The Stars Are Right! | CHA23100 | 2004 | Chaosium | Call of Cthulhu (Now) | |
| When They Come | | When They Come | | Feb 2021 | Chaosium | Call of Cthulhu (Classic) | December |
| When This Lousy War is Over | | An Inner Darkness | GGP2001 | 2020 | Golden Goblin Press | Call of Cthulhu (Classic) | Massachusetts |
| When Tides Are Right | | When Tides Are Right | | Sep 2025 | Chaosium | Call of Cthulhu (Classic) | |
| Where a God Shall Tread | 86-117 | At Your Door | CHA2326 | 1990 | Chaosium | Call of Cthulhu (Now) | Canada; 1990s; Rhan-Tegoth; Serpentman; Tcho-Tcho; Mr Shiny |
| Where are you Sister? | Sep 2008 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | England |
| Where Byakhees Dare | 4-37 | Toying With Humans | CHA0317 | 2005 | Chaosium | Call of Cthulhu (WWII) | England; March; 1943 |
| Where Doom Awaits | | Where Doom Awaits | AHC07 | 2017 | Fantasy Flight Games | Arkham Horror: The Card Game | |
| Where Dreams Take Root | | Where Dreams Take Root | | Oct 2025 | Chaosium | Call of Cthulhu (Classic) | Arkham; 1930; Spring |
| Where Madness Watches | 2-27 | Where Madness Watches | | Jul 2025 | Chaosium | Call of Cthulhu (Now) | Syria; Yog-Sothoth |
| Where Men Had Seldom Trod | 49-76 | Frontier Cthulhu | CHA6041 | 2007 | Chaosium | Call of Cthulhu (Darker Trails) | |
| Where Nothing Ever Happens | | Five Faces of Fear | | Jul 2019 | Chaosium | Call of Cthulhu (Now) | Ireland |
| Where Satan Fell | 34-35 | Minions | CHA2365 | 1997 | Chaosium | Call of Cthulhu (Classic) | |
| Where Secrets Lie | | Where Secrets Lie | SP1009 | 2013 | Stardust Publications | Dark Aeons | Arkham |
| Where the Gods Dwell | | Where the Gods Dwell | AHC43 | 2020 | Fantasy Flight Games | Arkham Horror: The Card Game | |
| Where the Spirits Dwell | 66-81 | Devil's Swamp | NCG-DS-HC-1 | 2018 | New Comet Games | Call of Cthulhu (Classic) | Massachusetts; 1927; September |
| Where the Trains Don?t Go | | The Way It Went Down | | 2018 | Arc Dream Publishing | Delta Green | |
| Where There's a Will | Adventure (F) | House of Tindalos | | | Self Published | Mythos | |
| Where we Stand Today: Britain from 1900 | 4-6 | Kingdom of the Blind | CHA0359 | 2008 | Chaosium | Call of Cthulhu (Classic) | |
| Whereabouts Unknown * | 2006 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | |
| Wherein Sanity and Magic is Discussed | 10-14 | Mythos Magic | CHA0341 | 2007 | Chaosium | Call of Cthulhu (Classic) | |
| Wherein the Nature of Magic is Discussed | 3-9 | Mythos Magic | CHA0341 | 2007 | Chaosium | Call of Cthulhu (Classic) | |
| Whether the Cat is Black or White | | Whether the Cat is Black or White | | 2024 | Trollgodfather Press | Tunnels and Trolls | |
| Which Witch is Which? | Adventure (F) | Scooby Doo Adventures | | | Self Published | Mythos | |
| Whichever She Was | 2007 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | |
| While He Sleeps | Event (F) | The Gleaming Spiral | CT44 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Whim of the Elder Gods Promo Card | | Whim of the Elder Gods Promo Card | | Oct 2017 | Steve Jackson Games | Munchkin | |
| Whirligig | Spell (R) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos | |
| Whisper in the Wind | Event (F) | Written and Bound | CT53 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG | |
| The Whisper of Ancient Secrets | | Cthulhu's Dark Cults | CHA6044 | 2010 | Chaosium | Call of Cthulhu (Classic) | |
| The Whisper Out of Time | 4-55 | The Whisper Out of Time | PZO90112 | 2016 | Paizo Publishing | Pathfinder | Fantasy World |
| Whisper Street | Oct 25 | shoggoth.net | | | Self Published | Call of Cthulhu (Classic) | |
| The Whisperer in Darkness | 146-198 | The Hastur Cycle | CHA6020 | 1993 | Chaosium | Call of Cthulhu (Classic) | |
| The Whisperer in Darkness | 156-211 | The Hastur Cycle | CHA6001 | 1993 | Chaosium | Call of Cthulhu (Classic) | |
| The Whisperer in the Light | 199-216 | Cthulhu City | PELGT44 | 2017 | Pelgrane Press | Trail of Cthulhu | Arkham |
| The Whisperers in Furness | 118-153 | Clockwork and Cthulhu | CW001004 | 2012 | Cakebread and Walton | Clockwork and Chivalry | England; 1645 |
| The Whispering Dead | 75-102 | The Strange Cases of Rudolph Pearson | CHA6042 | 2007 | Chaosium | Call of Cthulhu (Classic) | |
| Whispers | Oct 2019 | shoggoth.net | | | Self Published | Call of Cthulhu (Classic) | |
| The Whispers Beneath the Abbey | | The Whispers Beneath the Abbey | | Dec 2024 | Chaosium | Call of Cthulhu (Dark Ages) | England; Winter; 1123 |
| Whispers from Arkham | | The Void Unveiled: Whispers from Arkham | | 2026 | Dark Gate Games | The Void Unveiled | |
| Whispers from the Abyss | 45-65 | Whispers from the Abyss | T-4 | 1984 | Theatre of the Mind Enterprises | Call of Cthulhu (Classic) | North Carolina; February; 1925 |
| Whispers from the Bramble's Heart | 4-22 | Whispers from the Bramble's Heart | | Mar 2025 | Chaosium | Call of Cthulhu (Classic) | 1920s |
| Whispers from the Crawling Chaos | 43-49 | The Masks of Nyarlathotep Companion (Unlimited) | 60-MONC-03 (?) | 2016 | Sixtystone Press | Call of Cthulhu (Classic) | |
| Whispers from the Crawling Chaos | 49-55 | The Masks of Nyarlathotep Companion (Limited) | 60-MONC-08 | 2016 | Sixtystone Press | Call of Cthulhu (Classic) | |
| Whispers from Wavering Hills | | Whispers from Wavering Hills | | Nov 2021 | Chaosium | Call of Cthulhu (Classic) | Kentucky; November; 1924 |
| Whispers In Darkness | Adventure (F) | Unlimited | CAO1306-1 | 1997 | Chaosium | Mythos | |
| Whispers in the Frostbound Woods | | Whispers in the Frostbound Woods | | Nov 2025 | Chaosium | Call of Cthulhu (Strange Aeons) [1941] | Finland; February; 1941 |
| Whispers of Aoide | Conspiracy (F) | The Mark of Madness | CT66 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Whispers of Harlem | | Whispers of Harlem | DHSP2 | 2018 | Darker Hue Studios | Call of Cthulhu (Classic), Trail of Cthulhu | New York |
| Whispers of Harlem | 237-268 | Harlem Unbound | CHA23166 | 2020 | Chaosium | Call of Cthulhu (Classic) | New York; 1920s |
| Whispers of the Dark Mother Players' Guide | 2-10 | Whispers of the Dark Mother Players' Guide | | 2016 | Wayward Rogues Publishing | Pathfinder | |
| Whispers of the Old Ones | | Whispers of the Old Ones | | 2023 | Studio M | Pathfinder | |
| Whispers out of Mind | 49-58 | Dwellers in Shadow | 0004 | Jul 1996 | Triad Entertainments | Call of Cthulhu (Classic) | Massachusetts; October; 1928 |
| Whispers Pulp Magazine Collection | Tome (C) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos | |
| Whistle and I'll Come | 168-187 | Mythos Expeditions | PELGT37 | 2014 | Pelgrane Press | Trail of Cthulhu | Papua New Guinea; 1937; Flying Polyp |
| Whistleblower | | Whistleblower | | Nov 2019 | Chaosium | Call of Cthulhu (Now) | 2019; November |
| Whistling Bones | | Whistling Bones | | Oct 2024 | Chaosium | Call of Cthulhu (Strange Aeons) [1861] | Venezuela; 1861 |
| The Whitaker House | 2007 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | |
| A Whitby Vampire | 20-39 | Terror from the Skies | CHA23128 | 2012 | Chaosium | Call of Cthulhu (Classic) | England; June; 1929; Deep One; Star Vampire; Insect from Shaggai |
| White Bokor | 40-50 | Shadows Over Filmland | PELGT06 | 2008 | Pelgrane Press | Trail of Cthulhu | Caribbean Sea |
| The White Chapel | | Cthulhu Maps - The White Chapel | 082 | 2023 | Lovemaps | Call of Cthulhu (Classic) | |
| The White Circle | 8-24 | The White Circle | YH-C-2 | Nov 2024 | Chaosium | Call of Cthulhu (Classic) | Minnesota; 1921 |
| White Fire | 28-34 | The Adventurer | 1 | Apr 1986 | Mersey Leisure Publishing | Call of Cthulhu (Classic) | England; 1920s; May |
| White House Outhouse | Feb 2018 | Reckoning of the Dead | | | Self Published | Call of Cthulhu (Now) | Washington DC |
| White Out | Event (F) | The Mountains of Madness | CT16 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG | |
| The White Ship | Event (U) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos | |
| The White Ship | Support (F) | Journey to Unknown Kadath | CT31 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG | |
| White Ship Deck | | Thastygliax's Vault | | | Self Published | Mythos | |
| White Teeth | 144-195 | God's Teeth | APU8123 | 2023 | Arc Dream Publishing | Delta Green | 2016 |
| The White War | | The White War | cr3007 | Dec 2023 | Cthulhu Reborn | Cthulhu Eternal | Italy; December; 1916 |
| White Was Coming In From the Edges | | The Way It Went Down | | 2018 | Arc Dream Publishing | Delta Green | |
| The White Whale Inn | Location (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos | |
| A White Winter | 57-65 | Christmas in Kingsport | CHA0334 | 2006 | Chaosium | Call of Cthulhu (Classic) | Russia; December; 1919 |
| The White-Face at Dawn | | A Season in Carcosa | MRP0021 | 2012 | Miskatonic River Press | None | |
| Whitechapel Black-Letter | 94-113 | Bookhounds of London | PELGT16 | 2010 | Pelgrane Press | Trail of Cthulhu | London; 1930s |
| Whitechurch, Vermont | 4-11 | Protodimension | 10 | Aut 2011 | Kinstaff Media | Call of Cthulhu (Classic) | |
| Whiterock | | Shadows of Sumnerville Whiterock | | Dec 2025 | Chaosium | Call of Cthulhu (Now) | Arkham; 2000; March |
| The Whitewood Horror | 84-106 | Coming Full Circle | PAG1003 | 1995 | Pagan Publishing | Call of Cthulhu (Classic) | Massachusetts; 1935 |
| The Whitfield House Haunting | | The Whitfield House Haunting | | Dec 2022 | Chaosium | Call of Cthulhu (Classic) | London; 1923 |
| Whitton Greene | Character (F) | Seekers of Knowledge | CT59 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Who Are You? | 7-16 | Fate of Cthulhu | EHP0047 | 2019 | Evil Hat Productions | Fate of Cthulhu | |
| Who Do Voodoo? | 1998 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | |
| Who Do Voodoo? | | RPG Archive | | | Self Published | Call of Cthulhu (Classic) | |
| Who Do You Think You Are!? I am! | 2021 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | Antarctica |
| Who is the Murderer? | | Tales of Terror (I) | | 1990 | Pagan Publishing | Call of Cthulhu (Classic) | |
| Who is the Murderer? | 6-7 | Tales of Terror (III) | | | Self Published | Call of Cthulhu (Classic) | |
| Who is the Murderer? | 1990 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | |
| Who Killed the Case Officer? | 2019 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | |
| Who Needs Lovecraft Country? | 21-22 | Bayt al Azif | 2 | Sep 2019 | Bayt al Azif Inc | Call of Cthulhu (Classic) | |
| Who was Imhotep? | 3-6 | Letters From the Leagues Volume 3 | TAG20307 | 2020 | Triple Ace Games | Leagues of Adventure | |
| Who You Gonna Call? | 2005 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | |
| Who's That Knocking | 102-111 | The Bride of Halloween Horror | CHA0364 | 2009 | Chaosium | Call of Cthulhu (Now) | Midwest; Halloween |
| The Whole Kit and Caboodle | 48-63 | Guide to the Pacific Front | MPS01051CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
| A Whole Pack of Trouble | 6-24 | Occam's Razor | | 2021 | Stygian Fox | Call of Cthulhu (Now) | Arkham |
| The Whore of Baharna | 21-35 | Adventures in Arkham Country | CHA2342 | 1993 | Chaosium | Call of Cthulhu (Classic) | Dreamlands |
| Whose Fuel is Men and Stones | 28-33 | Fear's Sharp Little Needles | 3005 | 2018 | Stygian Fox | Call of Cthulhu (Now) | London; Cthugha |
| Whose Hears are Pure Gold | | A Season in Carcosa | MRP0021 | 2012 | Miskatonic River Press | None | |
| Why Abdul Al Hazred Went Mad | 234-238 | The Necronomicon | CHA6012 | 1996 | Chaosium | Call of Cthulhu (Classic) | |
| Why Abdul Al Hazred Went Mad | 351-360 | The Necronomicon | CHA6034 | 2002 | Chaosium | Call of Cthulhu (Classic) | |
| Why Cthulhu Now? | | Intellect Devourer | 7 | Jun 1988 | Self Published | Call of Cthulhu (Now) | |
| Why did he die, daddy? | 50-52 | Opifex Bimonthly | 9 | Sep 1997 | Self Published | Call of Cthulhu (Classic) | |
| Why Ephraim, What Are You Doing Here? | | House of Tindalos | | | Self Published | Mythos | |
| Why We Do It | | Dead But Dreaming | MRP0001 | 2009 | Miskatonic River Press | None | |
| Wiccaphobia | Event (F) | Rosemary's Baby | | | Self Published | Mythos | |
| Wichdoctor's Haunted Hut | Location (F) | Scooby Doo Set 3 | | | Self Published | Mythos | |
| Wicker Hollow | 5-13 | Wicker Hollow | | Jul 2024 | Chaosium | Call of Cthulhu (Now) | New Hampshire |
| Wight Wedding | 5-7 | Protodimension | 25 | Feb 2016 | Kinstaff Media | Cthulhu Dark | |
| Wilbur Bromley | 21-22 | The Black Seal | 2 | Mar 2003 | Brichester University Press | Call of Cthulhu (Delta Green) | |
| Wilbur Whateley | Ally (U) | Expeditions of Miskatonic University | CAO1301-1 | 1996 | Chaosium | Mythos | |
| Wilbur Whateley | Character (F) | Dunwich Denizens | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wilbur Whateley | Character (F) | Dunwich Denizens | CT15e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Wilbur Whateley | Character (F) | The Key and the Gate | CT60 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Wilbur Whateley's Diary | Tome (F) | Antarctica | | | Self Published | Mythos | |
| Wilbur Whateley, His Father's Son | Character (R) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wild Beasts | | Dagon | 24 | Jan 1989 | Self Published | Call of Cthulhu (Gaslight) | New England; 1880s |
| Wild Beasts | Character (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wild Dog Gorge | 1-7 | Wild Dog Gorge | | 2008 | Self Published | Yellow Dawn | |
| The Wild Hunt | 59-78 | Black Bag Jobs | CB71202 | 2011 | Cubicle 7 | Call of Cthulhu (Laundry) | England; 2000s |
| The Wild Hunt | 14-80 | Unseen Masters | CHA2384 | 2001 | Chaosium | Call of Cthulhu (Classic) | New York; 1990s; Hound of Tindalos |
| The Wild Hunt | 62-64 | The Wild Hunt | | 2021 | Stygian Fox | Call of Cthulhu (Classic) | 1920s |
| The Wild Hunt | 62-83 | Black Bag Jobs Reopened | CB70804 | Jun 2025 | Cubicle 7 | The Laundry | England; 2000s |
| Wild in the Country | Jul 2009 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | United Kingdom |
| Wild Inside | Adventure (F) | House of Tindalos | | | Self Published | Mythos | |
| Wild West NPC Generator | 1-10 | Wild West NPC Generator | | 2021 | Pink Dice Bag Publishing | Call of Cthulhu (Darker Trails) | |
| The Wilder Parts of the Forest | 1-4 | The Wilder Parts of the Forest | | 2016 | Self Published | Lovecraftesque | |
| Wilderland | | Wilderland | cr6105 | Dec 2025 | Cthulhu Reborn | APOCTHULHU | Australia |
| A Wilderness Camp | | Cthulhu Maps - A Wilderness Camp | 099 | 2023 | Lovemaps | Call of Cthulhu (Classic) | |
| The Wildlife of Britannia | 57-63 | Cthulhu Invictus: Britannia and Beyond | GGP2301 | 2023 | Golden Goblin Press | Call of Cthulhu (Invictus) | |
| The Will | Adventure (F) | House of Tindalos | | | Self Published | Mythos | |
| The Will | Adventure (F) | Unofficial Mythos Adventure Archive | | | Self Published | Mythos | |
| Will of Azathoth | Support (F) | The Key and the Gate | CT60 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG | |
| The Will of Oscar Drummond | | The Will of Oscar Drummond | | Oct 2021 | Chaosium | Call of Cthulhu (Classic) | |
| The Will of the Dead | | The Will of the Dead | | Sep 2025 | Chaosium | Call of Cthulhu (Classic) | New Jersey; 1922 |
| Will the Investigators Catch the Train? | 1:16 | Horror on the Orient Express Music | AOCD7004 | 2005 | A O Music | Call of Cthulhu (Classic) | |
| Will to Cremate/PROJECT CAVEAT | 2016 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | |
| Will's Island | 1-14 | Will's Island | | 1998 | Self Published | Call of Cthulhu (Now) | Maine; 1990s |
| Will's Island | 8-21 | Opifex Bimonthly | 15 | Sep 1998 | Self Published | Call of Cthulhu (Now) | Maine; 1990s |
| The Willawaw | Monster (F) | Scooby Doo Set 2 | | Mar 1999 | Self Published | Mythos | |
| William Bailey's Haunted Mansion | | William Bailey's Haunted Mansion | | Oct 2023 | Chaosium | Call of Cthulhu (Gaslight) | Australia; 1890s |
| William Bain "The One" | Character (F) | Kingsport Dreams | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG | |
| William Bain "The One" | Character (F) | Kingsport Dreams | CT13e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG | |
| William Blake | 9-22 | Fearful Symmetries | PELGT45 | 2021 | Pelgrane Press | Trail of Cthulhu | |
| William Channing Webb | Ally (C) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos | |
| William Davis Manly | Ally (F) | Sesqua Valley | | | Self Published | Mythos | |
| William Hope Hodgeson's The Night Land | 155-195 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | APOCTHULHU | |
| The Willow Manor | | hyperwerx.net | | | Self Published | Call of Cthulhu (Now) | November; 1926 |
| The Willowdales | 103 | The Unspeakable Oath | 14/15 | 1997 | Pagan Publishing | Call of Cthulhu (Classic) | |
| Wills Island | 595-608 | 40 Adventures for Call of Cthulhu | | 2002 | Self Published | Call of Cthulhu (Now) | Maine; 1990s |
| Wills-o-the-Wisp | Oct 2005 | shoggoth.net | | | Self Published | Call of Cthulhu (Classic) | |
| Wilson's Lodge | 16-30 | The House That Stands Alone | CHA0395 | 2010 | Chaosium | Call of Cthulhu (Now) | Maine; Hunting Horror |
| Wilum Hopfrog Pugmire | Ally (F) | Sesqua Valley | | | Self Published | Mythos | |
| Wily Goat-spawn | Character (C) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| win32.tiktok.man.trojan | Oct 2021 | shoggoth.net | | | Self Published | Call of Cthulhu (Now) | |
| The Wind Has Teeth | 200-218 | The Ithaqua Cycle | CHA6021 | 1998 | Chaosium | Call of Cthulhu (Classic) | |
| The Windmill of Hell | | Cthulhu Maps - The Windmill of Hell | 032 | 2022 | Lovemaps | Call of Cthulhu (Classic) | |
| Window of the Mind | 1-11 | Window of the Mind | | 2001 | Self Published | Call of Cthulhu (Now) | Ohio |
| The Windthrope Legacy | 58-69 | Goatswood and Less Pleasant Places | CHA2393 | 2001 | Chaosium | Call of Cthulhu (Now) | England; Insect from Shaggai |
| The Windwalker | | The Windwalker | CW-F3 | 2015 | Petersen Games | Cthulhu Wars | |
| Windy Gallows Hex | Support (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wine of Pnoth | Artifact (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos | |
| Wineville Chicken Coop Murders: Sarah Louise Cawthrope Northcott | Oct 2014 | shoggoth.net | | | Self Published | Call of Cthulhu (Classic) | |
| The Winfield Heritage | 95-115 | The Xothic Legend Cycle | CHA6013 | 1997 | Chaosium | None | |
| A Wing and a Prayer | | Chaosium Digest | v36n04 | May 2002 | Chaosium | Call of Cthulhu (Classic) | |
| A Wing and a Prayer | Adventure (F) | House of Tindalos | | | Self Published | Mythos | |
| A Wing and a Prayer | Adventure (F) | Unofficial Mythos Adventure Archive | | | Self Published | Mythos | |
| A Wing and a Prayer | Adventure (F) | Chaosium Digest | v22n12 | Jan 1998 | Chaosium | Mythos | |
| The Winged Cat | 2001 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | |
| The Winged Serpents of Arabia | Oct 2019 | shoggoth.net | | | Self Published | Call of Cthulhu (Invictus) | |
| Winifred Habbamock | | Winifred Habbamock | AHC49 | 2020 | Fantasy Flight Games | Arkham Horror: The Card Game | |
| Winlock's Dig | Support (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| The winning deck at the first WoTC GC | | Hastur Hobbies | | | Self Published | Mythos | |
| The Winoka Point Research Center | 140-145 | Fear's Sharp Little Needles | 3005 | 2018 | Stygian Fox | Call of Cthulhu (Now) | |
| The Winslow Project * | 41-64 | Dubious Shards | RA001 | 2006 | Atomic Overmind Press | Call of Cthulhu (Delta Green) | |
| Winter Comes Early | 2006 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | |
| The Winter of Atiradarinsept | | Deepest, Darkest Eden | MRP0025 | 2013 | Miskatonic River Press | None | |
| WINTER, PEPPER | 2018 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | Germany; 1971 |
| Wish for Cruelty | Event (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wish for Growth | Event (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wish for Insight | Event (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wish for Music | Event (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wish for Power | Event (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wish for Revelation | Event (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wish for Strength | Event (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wishing Ring Promo Card | | Wishing Ring Promo Card | | Jun 2015 | Steve Jackson Games | Munchkin | |
| Wishing Well | | A Season in Carcosa | MRP0021 | 2012 | Miskatonic River Press | None | |
| The Witch | 121-129 | Inversion | | Feb 2024 | Chaosium | Call of Cthulhu (Now) | 2023 |
| The Witch Cult Murders | | The Witch Cult Murders | | 2017 | Ludonova | Arkham Noir | |
| The Witch House | Support (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Witch Hunt (2015) | | Tales from Failed Anatomies | ARCTFFASC | | Arc Dream Publishing | Call of Cthulhu (Delta Green) | |
| Witch of Salem | | Witch of Salem | MFG3309 | 2008 | Mayfair Games | Witch of Salem | |
| The Witch Tree | Aug 2011 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | London |
| Witch-Mark | Support (R) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Witch-Tree | Support (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Witchcraft in Lovecraft Country | 13-26 | The Arkham Gazette | 3 | Oct 2015 | Sentinel Hill Press | Call of Cthulhu (Classic) | |
| Witchcraft Made Easy | Tome (F) | Scooby Doo Set 3 | | | Self Published | Mythos | |
| The Witchcraft Skull | | The Witchcraft Skull | | Dec 2024 | Chaosium | Call of Cthulhu (Classic) | |
| Witchcraft, Bool of Ceremonial Magic | Tome (F) | Rosemary's Baby | | | Self Published | Mythos | |
| The Witchdoctor | Monster (F) | Scooby Doo Set 3 | | | Self Published | Mythos | |
| Witches of N'Kai | 17 | Searchers of the Unknown | | 2012 | RetroRoleplaying | Searchers of the Unknown | |
| Witches of N'Kai | 1 | Witches of N'Kai | | 2009 | Self Published | Witches of N'Kai | |
| The Witches of Navarre | | The Witches of Navarre | | Oct 2020 | Chaosium | Call of Cthulhu (Strange Aeons) [17th Century] | Spain; 1611 |
| Witches' Hollow | 70-74 | The Arkham Gazette | 3 | Oct 2015 | Sentinel Hill Press | Call of Cthulhu (Classic) | |
| Witches' Hollow | Adventure (F) | House of Tindalos | | | Self Published | Mythos | |
| Witches' Hollow | Adventure (F) | Unofficial Mythos Adventure Archive | | | Self Published | Mythos | |
| Witches, Wizards, and Weather-Makers of New England | 89-100 | The Mythos Society Guide to New England | SKPE1423 | 2014 | Skirmisher Publishing | Call of Cthulhu (Classic) | |
| Witchfinder | | Witchfinder | SKP0921 | 2009 | Skirmisher Publishing | Call of Cthulhu (WWII) | Croatia; 1943 |
| Witchlights | | The Children of Lovecraft Country | | 2020 | Golden Goblin Press | Call of Cthulhu (Classic) | |
| With a Brush of the Fingertips | 120-122 | Lovecraftesque | | 2016 | Black Armada Games | Lovecraftesque | Massachusetts; 1930 |
| "With a Fine Toothed Comb" | Event (F) | The Horror Beneath the Surface | CT20 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG | |
| With a Little Seed | Adventure (F) | House of Tindalos | | | Self Published | Mythos | |
| With a Pinch of Salt | 18-21 | White Dwarf | 87 | Mar 1987 | Games Workshop | Call of Cthulhu (Classic) | |
| With Blue Uncertain Stumbling | 95-112 | The Island of Ignorance | GGP1301 | 2013 | Golden Goblin Press | Call of Cthulhu (Classic) | Florida; August; 1926 |
| With Extreve Prejudice? | 21-24 | The Black Seal | 1 | Nov 2001 | Brichester University Press | Call of Cthulhu (Delta Green) | |
| With Friends Like These | 2021 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | Alaska |
| With Friends Like These | | With Friends Like These | | 2019 | Third Eye Games | H P Lovecraft Preparatory Academy | |
| With Malice Aforethought | 68-124 | Adventures in Arkham Country | CHA2342 | 1993 | Chaosium | Call of Cthulhu (Classic) | Arkham |
| With Neighbors Like These? | Adventure (C) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos | |
| With the Storm | | Dread Shadows in Paradise | | 2016 | Golden Goblin Press | Call of Cthulhu (Classic) | |
| With Your Name on It | 2021 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | |
| Withdrawals | 2015 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | Great Race of Yith |
| The Withering Rhyme | 1-29 | The Withering Rhyme | | Jun 2025 | Chaosium | Call of Cthulhu (Classic) | Arkham; 1922; April |
| Within the Ice | Story (F) | The Shifting Sands | CT47 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Within the Woods | | Within the Woods | SESA1 | 2008 | Frost Interactive | Call of Cthulhu (Delta Green) | |
| Within You Without You | 2-19 | Out of the Vault | PAG1009 | 2002 | Pagan Publishing | Call of Cthulhu (Classic) | Maine; January; 1920 |
| Within You Without You | 22-32 | Of Keys and Gates | PAG2101 | 1995 | Pagan Publishing | Call of Cthulhu (Classic) | Maine; January; 1920 |
| Within You Without You | 35-55 | The Unspeakable Oath | 1 | Dec 1990 | Pagan Publishing | Call of Cthulhu (Classic) | Maine; January; 1920 |
| Without Warning | | Without Warning | | Mar 2021 | Chaosium | Call of Cthulhu (Atomic) | Canada; November; 1957 |
| The Witness | | The Way It Went Down | | 2018 | Arc Dream Publishing | Delta Green | |
| The Witness Alliance | 58-75 | The Labyrinth | APU8121 | 2019 | Arc Dream Publishing | Delta Green | |
| Wives of March | 2019 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | |
| The Wives of March | 1-47 | No Security | HBG001 | 2013 | Hebanon Games | None | United States; 1930s |
| Wizard of Chorazos | Character (C) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wizard of Chorazos | Character (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| The Wizard of Wilson Creek | 49-60 | The Phantom of Wilson Creek | CHA0404 | 2013 | Chaosium | Call of Cthulhu (Classic) | North Carolina; 1927 |
| The Wizard of Wilson Creek - 1927 | 53-60 | The Phantom of Wilson Creek | | May 2023 | Chaosium | Call of Cthulhu (Classic) | North Carolina; 1927 |
| Wizard of Yog-Sothoth | Character (U) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wizard of Yog-Sothoth | Character (F) | Secrets of Arkham | CT32 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Woe, Plague Be Upon Ye | 2021 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | Indiana |
| Wolf | | Mark of the Beast | CHA6062 | 2016 | Chaosium | Call of Cthulhu (Classic) | |
| A Wolf at the Door | | Tales of Terror (I) | | 1990 | Pagan Publishing | Call of Cthulhu (Classic) | Werewolf |
| A Wolf at the Door | 10-11 | Tales of Terror (III) | | | Self Published | Call of Cthulhu (Classic) | Werewolf |
| A Wolf at the Door | 1990 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | Werewolf |
| A Wolf at the Door | | RPG Archive | | | Self Published | Call of Cthulhu (Classic) | Werewolf |
| Wolf Hunger | Support (F) | Aspirations of Ascension | CT43 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Wolf in the Fold | Adventure (F) | House of Tindalos | | | Self Published | Mythos | |
| A Wolf In The Fold | Adventure (F) | Unofficial Mythos Adventure Archive | | | Self Published | Mythos | |
| The Wolf in the Labyrinth | 2-14 | The Wolf in the Labyrinth | | Nov 2022 | Chaosium | Call of Cthulhu (Classic) | Arkham |
| The Wolf Who Cried Boy | | The Wolf Who Cried Boy | | Dec 2021 | Librarians and Leviathans | Cthulhu Eternal | Colorado; November; 2021 |
| Wolf's End Lodge | Location (F) | Scooby Doo Set 1 | | | Self Published | Mythos | |
| WolfGang | | Mark of the Beast | CHA6062 | 2016 | Chaosium | Call of Cthulhu (Classic) | |
| The Wolfgirl in the Cupboard | | Mark of the Beast | CHA6062 | 2016 | Chaosium | Call of Cthulhu (Classic) | |
| Wolves in the Henhouse | 5-51 | Wolves in the Henhouse | | Aug 2025 | Chaosium | Call of Cthulhu (Strange Aeons) [Cold War] | |
| Wolves in the Mountain | 5-30 | Three Faces of the Wendigo | JCG018 | 2017 | Just Crunch Games | The Cthulhu Hack | Canada |
| The Wolves of Wheeling | 7-62 | The Wolves of Wheeling | | Dec 2024 | Chaosium | Call of Cthulhu (Darker Trails) | West Virginia; December; 1878 |
| The Wolves Outside the Cage | | Mark of the Beast | CHA6062 | 2016 | Chaosium | Call of Cthulhu (Classic) | |
| Woman in a Robe | May 2010 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | |
| The Woman in Yellow | 72-74 | Worlds of Cthulhu | 5 | Jan 2007 | Pegasus Press | Call of Cthulhu (Gaslight) | |
| The Woman of His Dreams | Character (F) | Sleep of the Dead | CT30 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG | |
| The Wombwell Stones | | The Wombwell Stones | | Jan 2021 | Chaosium | Call of Cthulhu (Classic) | England; 1921 |
| Women of the French Revolution | | Women of the French Revolution | | 2023 | Chaosium | Call of Cthulhu (Strange Aeons) [French Revolution] | |
| Women's Fashion | 12-18 | Bloodmoon's Guide to Historical Fashions: 1920s | | Sep 2023 | Chaosium | Call of Cthulhu (Classic) | |
| The Wonder at Mercury | 34-51 | Mythos in Medias Res | | 2016 | Xipe Totec Press | Trail of Cthulhu, Cthulhu Dark, Delta Green, Call of Cthulhu (Now) | France |
| The Wonder at Mercury | 2-20 | The Wonder at Mercury | | 2016 | Xipe Totec Press | Trail of Cthulhu, Cthulhu Dark, Delta Green, Call of Cthulhu (Now) | |
| Wonderland | 66-109 | The Sutra of Pale Leaves: Carcosa Manifest | CHA23189 | Sep 2025 | Chaosium | Call of Cthulhu (Now) | Japan; 1988; Spring; Hastur |
| Wonders in the Deep | 25-32 | In Strange Seas: The Regency Cthulhu Naval Compendium | | Oct 2023 | Chaosium | Call of Cthulhu (Regency) | |
| The Wondrous Creations of Bolonath | | Chaosium Digest | v19n11 | Jun 1997 | Chaosium | Call of Cthulhu (Dreamlands) | |
| Wondrous Intelligences | 301-304 | The Masks of Nyarlathotep Companion (Unlimited) | 60-MONC-03 (?) | 2016 | Sixtystone Press | Call of Cthulhu (Classic) | |
| Wondrous Intelligences | 410-413 | The Masks of Nyarlathotep Companion (Limited) | 60-MONC-08 | 2016 | Sixtystone Press | Call of Cthulhu (Classic) | |
| Wong's Chinese Emporium | | The Intermountain Matrix Newsletter | 5 | Mar 1991 | Self Published | Call of Cthulhu (Classic) | |
| Wonko Goes Ghostbusting | 15-16 | Opifex Bimonthly | 7 | May 1997 | Self Published | Call of Cthulhu (Classic) | |
| Wooden Death | 194-214 | Secrets of Kenya | CHA23109 | 2007 | Chaosium | Call of Cthulhu (Classic) | Kenya; Mi-Go |
| Wooden Homonculus | Character (F) | Shadow of the Monolith | CT52 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Woodhill's Social Ale House | 2016 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | Washington DC |
| A Woodland Tale | 71-92 | Strange Tales of Dread & Wonder #1 | CHA0329 | 2006 | Chaosium | Call of Cthulhu (Strange Aeons) [1640s] | England; July; 1643 |
| Woods Haven | 101-109 | Opifex Bimonthly | 21 | Sep 1999 | Self Published | Call of Cthulhu (Classic) | Massachusetts; 1929; Mi-Go; Dark Young of Shub-Niggurath |
| Woods Haven | | Chaosium Digest | v29n04 | Dec 1999 | Chaosium | Call of Cthulhu (Classic) | Massachusetts; 1929; Mi-Go; Dark Young of Shub-Niggurath |
| Woods' Edge | Jul 2018 | Reckoning of the Dead | | | Self Published | Call of Cthulhu (Classic) | Washington |
| Woodson Pond | 377-387 | 40 Adventures for Call of Cthulhu | | 2002 | Self Published | Call of Cthulhu (Now) | Florida; 1990s |
| Woodson Pond | 1-11 | Woodson Pond | | 1999 | Self Published | Call of Cthulhu (Now) | Florida; 1990s |
| Woodson Pond | 7-17 | Opifex Bimonthly | 16 | Nov 1998 | Self Published | Call of Cthulhu (Now) | Florida; 1990s |
| Word from on High | | Chaosium Digest | v18n12 | Apr 1997 | Chaosium | Call of Cthulhu (Now) | |
| Word from on High | 49 | Tales of Terror (III) | | | Self Published | Call of Cthulhu (Now) | |
| Word from On High | 1997 | talesofterror.net | | | Self Published | Call of Cthulhu (Now) | |
| Word From on High | Feb 1997 | rpg.net | | | Self Published | Call of Cthulhu (Now) | |
| Words | | The Way It Went Down | | 2018 | Arc Dream Publishing | Delta Green | |
| Words Have Power | 134-157 | The Laundry Operative's Handbook | CB70801 | Jun 2025 | Cubicle 7 | The Laundry | |
| Words Have Power: Sorcery | 124-148 | The Laundry | CB71200 | 2010 | Cubicle 7 | Call of Cthulhu (Laundry) | |
| Words of Inspiration | Support (C) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Words of Wisdom | 115-125 | The 1920s Investigator's Companion | CHA2370 | 1997 | Chaosium | Call of Cthulhu (Classic) | |
| Work Therapy * | 80 | Taint of Madness | CHA2354 | 1995 | Chaosium | Call of Cthulhu (Classic) | London; 1890s |
| Working a Hunch | Event (C) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Working a Hunch | Event (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Workplace Hazards | 1999 | The Dark Gulf of N'kai | | | Self Published | Call of Cthulhu (Classic) | |
| The Works of I.G. Payne | | The Works of I.G. Payne | | Apr 2021 | Chaosium | Call of Cthulhu (Gaslight) | England; January; 1895 |
| The World | 18-19 | Call of Catthulhu | COCAT01 | 2013 | Faster Monkey Games | Call of Cthulhu (Cathulhu) | |
| The World | 27-64 | Tales of Manace and Mystery | YH-C-15 | Mar 2026 | Chaosium | Call of Cthulhu (Classic) | |
| World and Character Creation | 8-32 | Lands of Mystery | Hero 20 | 1985 | Hero Games | Call of Cthulhu (Classic), Justice Inc, Daredevils, Chill | |
| A World in Chaos | 9-16 | Nocturnum: Deep Secrets | CC03 | 1999 | Fantasy Flight Games | Call of Cthulhu (Now) | |
| The World of Cohors | 40-77 | Gamesmaster's Guide | MUH0860110 | Sep 2025 | Modiphius Entertainment | Cohors Cthulhu | |
| World of Cohors | 181-206 | Player's Guide | MUH0860108 | Sep 2025 | Modiphius Entertainment | Cohors Cthulhu | |
| World of Cthulhu | 1-4 | World of Cthulhu | | Mar 2023 | Cliff Hanger | World of Cthulhu | |
| World of Cthulhu | 1-11 | World of Cthulhu | | 2005 | Self Published | The World of Darkness | |
| The World of Hudson and Brand | 12-18 | Hudson and Brand, Inquiry Agents of the Obscure | 3004 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight) | |
| A World of Mythos and Dust | 5-11 | Secrets of the Dust | MUH050028 | 2016 | Modiphius Entertainment | Call of Cthulhu (Achtung!), Savage Worlds (Achtung!), Savage Worlds (Dust) | |
| The World of Necronomicon | | The World of Necronomicon | | Jun 2020 | Chaosium | Call of Cthulhu (Now) | |
| World Settting | 19-22 | The Legacy of Cthulhu | | 2023 | Mind's Vision | The Legacy of Cthulhu | |
| World Source Book | 457-470 | Raiders of R'lyeh Gamemaster's Guide and Complete Rules | | 2017 | Cipher Bureau | Raiders of R'lyeh | |
| World Sourcebook | 292-512 | From the Tideless Sea | | Feb 2023 | Cipher Bureau | Raiders of R'lyeh | |
| World War II | | Big A** Book of Hooks | | Jun 2025 | Chaosium | Call of Cthulhu (WWII) | |
| The World's End | | Denied to the Enemy | | 2010 | Armitage House | Call of Cthulhu (Delta Green) | |
| Worlds | 130-151 | Chthonian Stars | WDF25020 | 2011 | WildFire Games | Traveller (Chthonian Stars) | |
| Worlds | 184-193 | The Void | WDF33000 | 2013 | WildFire Games | The Void | |
| Worlds Torn Asunder | Event (U) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| The Worm Has Turned | | More Tales of Terror | PAG2105 | 2000 | Pagan Publishing | Call of Cthulhu (Classic) | |
| The Worm of Wall Street | | The Worm of Wall Street | | Nov 2023 | Chaosium | Call of Cthulhu (Now) | New York |
| The Worm Stones | 13-16 | Fantasy Chronicles | 5 | Nov 1986 | Fantastic Publications | Call of Cthulhu (Classic) | England; 1920s |
| The Worm That Walks | 40-46 | Cthulhu Classics | CHA3301 | 1989 | Chaosium | Call of Cthulhu (Classic) | Maine; 1920s; Mi-Go |
| The Worm That Walks | 92-104 | Shadows of Yog-Sothoth | CHA2397 | 2004 | Chaosium | Call of Cthulhu (Classic) | Maine; 1920s; Mi-Go |
| The Worm That Walks | 40-46 | Shadows of Yog-Sothoth | CHA2010 | 1982 | Chaosium | Call of Cthulhu (Classic) | Maine; 1920s; Mi-Go |
| Worm-ridden One | Character (C) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Worm-ridden One | Character (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Worms | 1997 | Ubar | | | Self Published | Call of Cthulhu (Classic) | |
| The Worms of Nergal | | The Worms of Nergal | | 2025 | WildFire Games | CthulhuTech | |
| Worms of the Earth | Character (U) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wormwood * | 2007 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | |
| Wormwood Arena | 124-180 | Control Group | APU8137 | 2019 | Arc Dream Publishing | Delta Green | Kansas; 2013; August |
| Worries | 70-71 | Damnation View | WDF23300 | 2009 | WildFire Games | CthulhuTech | |
| Worse For The Wear | Event (R) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| The Worship of Atlach-Nacha | 7-18 | The Unspeakable Oath | 25 | Jul 2018 | Pagan Publishing | Call of Cthulhu (Classic) | |
| Worship of Hastur During the Time of the Dark Ages | 71-73 | Ripples From Carcosa | CHA0312 | 2005 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Worship of Hastur During the Time of the Roman Empire | 39-41 | Ripples From Carcosa | CHA0312 | 2005 | Chaosium | Call of Cthulhu (Invictus) | |
| The Worship of Tsathoggua through the Centuries | 68-77 | Worlds of Cthulhu | 6 | Jan 2009 | Pegasus Press | Call of Cthulhu (Classic) | |
| The Worst Deck in the Tournament! | | House of Tindalos | | | Self Published | Mythos | |
| WotCophobia | Event (F) | House of Tindalos | | | Self Published | Mythos | |
| Wotcophobia (1) | Event (F) | Unofficial Mythos Adventure Archive | | | Self Published | Mythos | |
| Wotcophobia (2) | Event (F) | Unofficial Mythos Adventure Archive | | | Self Published | Mythos | |
| Wrack | Spell (C) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos | |
| Wrack | Event (C) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wraith | Character (F) | The Wailer Below | CT37 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Wrapped in Flesh | Support (C) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Wrath of the Sulfurer | 59-74 | Tales of the Caribbean | GGP1603 | 2016 | Golden Goblin Press | Call of Cthulhu (Classic) | St Vincent and the Grenadines |
| Wrath of the Wind-Walker | 244-256 | The Ithaqua Cycle | CHA6021 | 1998 | Chaosium | Call of Cthulhu (Classic) | |
| The Wreck | 114-116 | Lovecraftesque | | 2016 | Black Armada Games | Lovecraftesque | Deep Space |
| The Wreck | 59-77 | Arkham Detective Tales | PELGT08 | 2009 | Pelgrane Press | Trail of Cthulhu | New York |
| The Wreck | 61-79 | Arkham Detective Tales (Extended Edition) | PELGT08 | 2010 | Pelgrane Press | Trail of Cthulhu | New York |
| The Wreck | 2001 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | |
| The Wreck of the Elizabeth Wright | 16-19 | The Arkham Gazette | 2 | Nov 2013 | Sentinel Hill Press | Call of Cthulhu (Classic) | |
| Wreck of the Hellene | Location (C) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos | |
| Wrestlenomicon | | Wrestlenomicon | | 2019 | Arc Dream Publishing | Wrestlenomicon | |
| Write Comics the Nedor-Lovecraft Way! | 59-65 | Adventures into Darkness | | 2008 | Atomic Overmind Press | Hero System, Mutants and Masterminds, PDQ | |
| Write Comics the Nedor-Lovecraft Way! | 59-65 | Adventures into Darkness | | 2008 | Atomic Overmind Press | Mutants and Masterminds | |
| Write Comics the Nedor-Lovecraft Way! | 59-65 | Adventures into Darkness | | 2008 | Atomic Overmind Press | PDQ | |
| Write Comics the Nedor-Lovecraft Way! | 59-65 | Adventures into Darkness | | 2008 | Atomic Overmind Press | Hero System | |
| The Writer | | The Writer | | 2017 | Cthulhu Project | The Writer | |
| Writers in the Darkness | 1-10 | Writers in the Darkness | | 2020 | Self Published | Writers in the Darkness | |
| Writhe | 2023 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | |
| Writhing Wall | Event (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Writhing Wall | Event (F) | Secrets of Arkham | CT32 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Writing a Mystery | 26-34 | Cthulhu Dark | | 2017 | Self Published | Cthulhu Dark | |
| Writing a Mystery | 22-30 | Cthulhu Dark 0 | | 2016 | Self Published | Cthulhu Dark | |
| The Writing on the Wall | | Chaosium Digest | v07n05 | Aug 1994 | Chaosium | Call of Cthulhu (Classic) | Lloigor |
| The Writing on the Wall | | Tales of Terror (I) | | 1990 | Pagan Publishing | Call of Cthulhu (Classic) | Lloigor |
| The Writing on the Wall | 5 | Tales of Terror (III) | | | Self Published | Call of Cthulhu (Classic) | Lloigor |
| The Writing on the Wall | 1990 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | Lloigor |
| Written in Blood | Support (F) | The Shifting Sands | CT47 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG | |
| Written in Grave Dust | Adventure (F) | House of Tindalos | | | Self Published | Mythos | |
| Written in Stone | 2003 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | Michigan |
| Written in the Sky | Event (F) | Spawn of Madness | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG | |
| Written in the Sky | Event (F) | Spawn of Madness | CT12e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG | |
| The Written Word | 47-52 | Mysteries of the Raj | CHA0391 | 2010 | Chaosium | Call of Cthulhu (Gaslight) | |
| The Written Word | 40-? | Ripper Fhtagn | | 2020 | Self Published | The Jack Hack | London; 1880s |
| The Wrong | 609-626 | 40 Adventures for Call of Cthulhu | | 2002 | Self Published | Call of Cthulhu (Now) | Maine; 1990s |
| The Wrong | 1-18 | The Wrong | | 1996 | Self Published | Call of Cthulhu (Now) | Maine; 1990s |
| The Wrong | 5-19 | Opifex Bimonthly | 5 | 1996 | Self Published | Call of Cthulhu (Now) | Maine; 1990s |
| The Wrong Man | 45 | The Black Seal | 2 | Mar 2003 | Brichester University Press | Call of Cthulhu (Delta Green) | United Kingdom |
| The Wrong Neighbors | 35-41 | Dark Passions | WDF23200 | 2008 | WildFire Games | CthulhuTech | |
| Wrong Side of the Tracks | Dec 2009 | talesofterror.net | | | Self Published | Call of Cthulhu (Classic) | |
| Wrong Turn | 65-85 | Cthulhu Britannica | CB7350 | 2009 | Cubicle 7 | Call of Cthulhu (Now) | England; 2000s |
| WSH Cemetery | Location (F) | Seattle | | | Self Published | Mythos | |
| The Wurms in the Grid | 40-55 | Eldritch Chrome | CHA6052 | 2013 | Chaosium | Call of Cthulhu (Cyberpunk) | |
| The Wystdovja Vale Gazetteer | | The Wystdovja Vale Gazetteer | | Sep 2020 | Chaosium | Call of Cthulhu (Gaslight) | |