| TontonPizza | Developer | |
| Tony | Developer | |
| Tony Baechler | DeveloperPublisher | |
| Tony Barber | Developer | |
| Tony Chen | Developer | |
| Tony Garcia | Developer | |
| Tony Huggard | Developer | |
| Tony Ilersich | Developer | |
| Tony Jedlovsky and Brian Orr | Developer | |
| Tony LindoRock | Developer | |
| Tony Mack | Developer | |
| Tony Ngo and Benny Ngo | Developer | |
| Tony Porter | Developer | |
| Tony R. Porter | Developer | |
| Tony Rainbird | Developer | |
| Tony Reeves | Developer | |
| Tony Suzuki | Developer | |
| Tony Wang | Developer | |
| Tony Warriner | Developer | |
| TonyNowak | Developer | |
| Tony_B | Developer | |
| Tonynopro | Developer | |
| Tonyz | Developer | |
| Tonz Guy | Developer | |
| Too | Developer | |
| Too DX | DeveloperPublisher | |
| Too Kind Studio | Developer | |
| Too Kyo Games | Developer | |
| Too Much Tomato | Developer | |
| TooManyTeethGames | Developer | |
| Toofu | Developer | |
| Tookipalooki | Developer | |
| Toolbox Design | Developer | |
| Toolstony | Developer | |
| Toombler | Developer | |
| Toomin | Developer | |
| Toone | Developer | |
| Toonhawk | Developer | |
| Toonik Games | Developer | |
| Toonspex | Developer | |
| Toontraxx | Developer | |
| Toorock | Developer | |
| Tooth Games | Developer | |
| ToothandClaw | Developer | |
| Top Cow Productions | Developer | |
| Top Floor Studio Games | Developer | |
| Top Hat Games | Developer | |
| Top Hat Studios | DeveloperPublisher | |
| Top Hat Studios, Inc. | Developer | |
| Top Ten Software | Publisher | |
| TopMAD Software | Publisher | |
| TopWare | DeveloperPublisher | |
| TopWare Interactive | DeveloperPublisher | |
| TopazMacaroon | Developer | |
| TopazPlayz | Developer | |
| TophWells | Developer | |
| Topheavy Studios | Developer | |
| Topia | Publisher | |
| TopinambourMan | Developer | |
| Topis | Publisher | |
| Toplitz Productions | DeveloperPublisher | |
| Topo Soft | DeveloperPublisher | |
| Topologika | DeveloperPublisher | |
| Toppan | DeveloperPublisher | |
| Topsoft | DeveloperPublisher | |
| Topstitch Games | DeveloperPublisher | |
| Torben | Developer | |
| Torched Hill | Developer | |
| Torec Studio | Developer | |
| Toremneon | Developer | |
| Toren K. Smith | Developer | |
| Torfi | Developer | |
| Tori | Developer | |
| Tori Truslow | Developer | |
| ToriDomi | Developer | |
| Toridashime Itoi | Developer | |
| Torii Games | Developer | |
| Toriously | Developer | |
| Torito Games | Developer | |
| Torn Banner Studios | Developer | |
| Torn Page | Developer | |
| TornApart | Developer | |
| Tornado | Developer | |
| Tornado Studios | Developer | |
| Tornado Tower | Developer | |
| Toro Comics | Developer | |
| Toroll | Developer | |
| Torpex Games | Developer | |
| TorpleDook | Developer | |
| Torpor | Developer | |
| Torque Studios | Developer | |
| Torreng Labs | Developer | |
| Tortty | Developer | |
| Tortue | Developer | |
| Tortuga Team | Developer | |
| Torus (Philip Mochan, Ricardo J.M. Pinto, Dominic M.N. Prior, Mark Wighton) | Developer | |
| Torus Games | DeveloperPublisher | |
| Torvelt | Developer | |
| Toryn | Developer | |
| Tose | Developer | |
| Tose Co. | Developer | |
| Tose Co., Ltd. | Developer | |
| Tose Software | Publisher | |
| Toshiaki Ota | Publisher | |
| Toshiba | DeveloperPublisher | |
| Toshiba EMI | DeveloperPublisher | |
| Toshiba EMI (JP) | Publisher | |
| Toshiba EMIJP | Publisher | |
| Toshiba Miramax Communications | Publisher | |
| Toshiba-EMI | Publisher | |
| Toshiba-EMI Ltd | Developer | |
| Toster | Developer | |
| Toster12D3 | Developer | |
| Tostym8 | Developer | |
| Total Mayhem Games | DeveloperPublisher | |
| Total Monkery | DeveloperPublisher | |
| Totalconsole | Publisher | |
| Totally Games | DeveloperPublisher | |
| Toteki | Developer | |
| Totem Games | DeveloperPublisher | |
| Totema Studio | Developer | |
| Totodyle | Developer | |
| Tots' Team | Developer | |
| Totteri | Developer | |
| Tottori | Developer | |
| Touch Mechanics | DeveloperPublisher | |
| Touchdown | Developer | |
| Touchdown Entertainment | Developer | |
| TouchfightGames | Developer | |
| Tough Dove Games | Developer | |
| Touka Arte | Developer | |
| Toukana | Developer | |
| Toulou | Developer | |
| Toulousio | Developer | |
| Tourmaline Studio | Developer | |
| Touwaku | Developer | |
| Tovan | Developer | |
| TovuDev | Developer | |
| Towa Chiki | Publisher | |
| Towa Chiki JP | Publisher | |
| Towacchi | Developer | |
| Toward | DeveloperPublisher | |
| Tower Five | DeveloperPublisher | |
| Tower Team | Developer | |
| Tower Up Studios | DeveloperPublisher | |
| TowerHufham | Developer | |
| TowerUpStudios | Developer | |
| Town Factory | Developer | |
| TownEater | Developer | |
| Towstee | Developer | |