| Harman Kamboj | Developer | |
| Harmless Games LLC | Developer | |
| HarmlessGames | Developer | |
| HarmoniaProxPro | Developer | |
| Harmonie Games | Developer | |
| Harmonious Games | DeveloperPublisher | |
| Harmonix | DeveloperPublisher | |
| Harmonix Music | Developer | |
| Harmonix Music Systems | Developer | |
| Harmony Gold | Developer | |
| Harmony Honey | Developer | |
| HarmsWaySoftware | Developer | |
| Harness Games | Developer | |
| Harney-Barrow | Developer | |
| HaroGames | Developer | |
| Harold Krell | Developer | |
| HaroldSama | Developer | |
| Harotobira | Developer | |
| HarpNet Studios | Developer | |
| Harper Rhett | Developer | |
| HarpiaGamesStudio | Developer | |
| Harpwood Studio | Developer | |
| Harrell W Stiles | Developer | |
| Harrell W. Stiles | Developer | |
| Harri Jokinen | Developer | |
| Harriet Anklebone | Developer | |
| Harriethw | Developer | |
| Harris Semiconductor | Developer | |
| Harris The Wannabe Hulk | Developer | |
| Harrison Bright | Developer | |
| Harrison Chute | Developer | |
| HarrisonGowland | Developer | |
| Harrisonlad10 | Developer | |
| Harrk | Developer | |
| Harrm | Developer | |
| Harrpeters | Developer | |
| Harry | Developer | |
| Harry Alisavakis | Developer | |
| Harry Dodgson | Developer | |
| Harry Harric Chen | Developer | |
| Harry Josephine Giles | Developer | |
| Harry Mundelbulb | Developer | |
| Harry Newton | Developer | |
| Harry S. Price | Developer | |
| Harry Waters | Developer | |
| HarrySingh | Developer | |
| Harsh | Developer | |
| Harsh Raj Singhania | Developer | |
| Harshil2000 | Developer | |
| Haru | Developer | |
| HarukaNami | Developer | |
| Haruneko | DeveloperPublisher | |
| Haruo Teshima | Developer | |
| Haruspex Games | Developer | |
| Harvest One | DeveloperPublisher | |
| Harvest VR | Developer | |
| Hasan Kosmaca | Developer | |
| Hasbro | DeveloperPublisher | |
| Hasbro Interacrtive | Publisher | |
| Hasbro Interactive | DeveloperPublisher | |
| Hasbro Interactive (Under the Atari Interactive Label) | Publisher | |
| Hasbro Interactive (Under the Atari Interactive Label)PAL,NA | Publisher | |
| Hasbro Interactive (Under the MicroProse Name) | Publisher | |
| Hasbro Interactive (as MicroProse) | Publisher | |
| Hasbro Interactive JP | Publisher | |
| Hasbro Interactive, Inc. | Publisher | |
| Haschi | Developer | |
| HashSythe | Developer | |
| Hasi-b | Developer | |
| Haslus | Developer | |
| Hasnain Noorani | Developer | |
| HastilyAssembled | Developer | |
| HasuKimchi | Developer | |
| Hat on a Flower Studio | Developer | |
| HatBanditGames | Developer | |
| HataIkeda | Developer | |
| Hatcap Studios Canada | Developer | |
| Hategan Valentin | Developer | |
| Hatem Amer | Developer | |
| Hatinh Interactive | Publisher | |
| Hats | Developer | |
| Hatsimufu | Developer | |
| HatsuStudios | Developer | |
| HatsuneMiku101 | Developer | |
| Hattoman | Developer | |
| Haubanero | Developer | |
| Haunt Pun | Developer | |
| Haunted Bees Productions | DeveloperPublisher | |
| Haunted Tie | Publisher | |
| Haunted Window | Developer | |
| Haus Teknikka | Developer | |
| Havoc Games | Developer | |
| Hawell | Developer | |
| HawkSandwich | Developer | |
| Hawkes | Developer | |
| Hawkie123 | Developer | |
| Haxoft | DeveloperPublisher | |
| Haxor | Developer | |
| Hayashi-Gumi | DeveloperPublisher | |
| Hayden King | Developer | |