Group
- Hex Games17
- High Rock Press1
- Hikari Games3
- Holy Grail Games135
- Hunters Books12
- Hurd Family Gaming3
- Hydra Miniatures3
- Hypernode Media8
- IDIG6
- IDW Games2
- IELLO99
- INS Group3
- Imagination International, Inc.8
- Impact Miniatures1
- Impact! Miniatures / MHE Crew5
- InMotion Games3
- Indiana Cosplay Association16
- Indiana Landmarks9
- Indiana State Library1
- Indiana University Learning Sciences Program1