Group
- Close To My Heart8
- Closet Gamers, Inc.1
- Cool Mini or Not10
- Corvus Belli S.L.L.4
- Cosplay Deviants4
- Costume By Design1
- Costumes By Design13
- Costumes by Design1
- Council of Lorien31
- Crafty Games10
- Creative Arts Teaching Seminars18
- CrossCut Games1
- CrossCut Games, Inc.1
- Cryptozoic Entertainment44
- Cubicle 756
- D20 Burlesque1
- DAD4
- DDWRPG / Earthbound TimeLords / MAGE1
- Dakkar Unlimited1
- Dark Nebula Games7