Group
- CrossCut Games, Inc.5
- Crosstime Contraband6
- Cryptozoic Entertainment28
- Cubicle 7 Entertainment, Ltd47
- Cyberia Ltd.1
- Cycorp1
- Cylindrical Head Games1
- Czech Games Edition107
- D20 Burlesque1
- D20 Hobbies1
- DDM Guild7
- DGS Games14
- DMNotebook1
- Damsels of Dorkington6
- Dan the Bard5
- Dancing and Dragons22
- Dark Phoenix2
- Dark Phoenix Events2
- Darkness Remembered73
- Dead Games Society2