Group
- Chainmail Legion18
- Chaos Haunted & Historical Tours9
- Chaosium71
- Chara Games11
- Cheapass Games2
- Cheese Weasel Logisitics1
- Chicago City Gamers3
- Chicago Dungeon Crawl126
- Chicago MegaGames1
- Christian Gamers Guild2
- Chrysalis Creative Endeavors7
- Cincinati Arsenal Gaming3
- Cincinnati Arsenal Gaming87
- Cincinnati arsenal gaming4
- Cincinnati arsenal gaming 1
- Circle City Con1
- Circle City of Death1
- Ck studios4
- ClaireKnits2
- CoGG56