| 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 | |
| Toxapez | Developer | |
| Toxic Games | DeveloperPublisher | |
| Toxic Sasquatch | Developer | |
| Toxic Squad | Developer | |
| ToxicPink | Developer | |
| Toxicator | Developer | |
| Toxijuice | Developer | |
| ToxinWasTaken | Developer | |
| Toy Box | Developer | |
| ToyBox | Developer | |
| ToyPops | DeveloperPublisher | |
| Toybox | Developer | |
| Toybox Games | Developer | |
| Toybox Games Studio | Developer | |
| Toydea | DeveloperPublisher | |
| Toyful Games | DeveloperPublisher | |
| Toylogic | Developer | |
| Toys For Bob | Developer | |
| Toys for Bob | Developer | |
| Toyuro | DeveloperPublisher | |
| Tozai Games | DeveloperPublisher | |
| Tozaku | Developer | |
| Tozzo4316 | Developer | |
| Tpot | Developer | |
| Tr3a | Developer | |
| TrAyZeN | Developer | |
| Trabulance | DeveloperPublisher | |
| TrackMaster: Free For All Motorsport | Developer | |
| Tracy Montgomery | Developer | |
| Trade | Developer | |
| Tradewest | Publisher | |
| Tradewest NA | Publisher | |
| Tradewest NA/EU | Publisher | |
| Traffic Software | DeveloperPublisher | |
| Traggey | Developer | |
| Tragnarion Studios | DeveloperPublisher | |
| Tragos Games | Developer | |
| TrainYard Interactive | Developer | |
| Trainwreck Studios | Developer | |
| Tran | Developer | |
| Trancepticon | Developer | |
| Tranji Studios | Developer | |
| Tranklizer | Developer | |
| Transformer Production Company Inc. | Developer | |
| Transgaming Technologies | Developer | |
| Transhuman Design | Developer | |
| Transmission Games | Developer | |
| Transoft | Publisher | |
| Transolar Games | Developer | |
| Transposed | Developer | |