| Haemimont Games |
| Haggard Games |
| HAL Laboratory |
| Hammerfall Publishing |
| Harebrained Schemes |
| Harmonix |
| Hasbro Interactive |
| Hazardous Software, Inc. |
| HB Studios |
| HBM |
| Headfirst Productions |
| Headstrong Games |
| Headup Games |
| Heavy Iron Studios |
| Her Interactive |
| Heuristic Park |
| HexaDrive |
| Hidden Path Entertainment |
| High Impact Games |
| High Moon Studios |
| High Voltage Software |
| Hiker Games |
| Hip Interactive |
| History Television |
| Hitmaker |
| Holistic Design |
| Honeyslug |
| HotGen |
| Hothead Games |
| Hothouse Creations |
| House of Tales |
| Housemarque |
| Hudson Soft |
| Human Head Studios |
| HumaNature Studios |
| Humble Hearts |
| Hydravision |
| Hypnotix |
