-Castle Wolfenstein - A Club For Any Fan of Wolf3D and SoD!
-Diehard Wolfers Archives on Yahoo
-James' Coding Club For Wolfenstein 3D
-James Ingham's Coding Club For Wolfenstein 3D
-The RTCW and Wolf 3D Fan Club
-The TDG Clan Representing RTCW
-Wolfenmac - The Mac Wolfenstein Resource!
-Wolfenmania Plaza For The Mac version of Wolfenstein 3D
-The Wolfenstein Return: Return To Castle Wolfenstein
-Wolf 3D and Quake Club
-Wolf3D Editing Club - The Place For Serious Wolf3D Editing
-WO_3d - Wolfenstein 3D Club For Die Hards
-Wolfenstein 3D Fan Club - The Wolfenstein Spirit Lives
-The Wolfenstein 3D / Spear of Destiny Club
-Yet Another Wolf 3D Club
-Do a search on Yahoo Groups for Return To Castle Wolfenstein, RTCW, Wolf3D, or Wolfenstein. There are other groups, but I'm only listing the English language ones with 33 or more members. Capstone Games
-Grail Seekers - A Christian forum for grail topics including Jesus, The Spear of Destiny, and Templars. For Heaven's sakes don't type, "By the ways, There's a Spear of Destiny computer game," because they almost definitely already know that and it's off the subject.
-Retro FPS Club
-Rise of The Triad - For those who love ROTT