| Triptychon | Developer | |
| Tripwire Interactive | DeveloperPublisher | |
| Triskell-Interactive | Developer | |
| Trisol | Developer | |
| Tristan Dahl | Developer | |
| Tristan Fish | Developer | |
| Tristan Gregory | Developer | |
| Tristan Harris | Developer | |
| Tristan Phipson | Developer | |
| Tristoteles Games | Developer | |
| Trisynergy | Publisher | |
| Trite Games | Developer | |
| Triumph International | Publisher | |
| Triumph Studios | DeveloperPublisher | |
| Triverske | Developer | |
| Trivi | Developer | |
| Trivial_bros | Developer | |
| Trixie | Developer | |
| Trochi Studio | Developer | |
| Troct | Developer | |
| Trogallart | Developer | |
| Troglobytes | Developer | |
| Troglobytes Games | DeveloperPublisher | |
| Troglodev | Developer | |
| Troika Games | Developer | |
| Trojan Horse Studio | Developer | |
| Trojan Software | Publisher | |
| Trojan Studio | Developer | |
| TroldKarlens Hat | Developer | |
| Troll House Games | Developer | |
| Troll Inc | Developer | |
| TrolledWoods | Developer | |
| Trolljeigur | Developer | |
| Tromenos | Developer | |
| Trong | Developer | |
| Tronix | Developer | |
| Trotil Team Games | Developer | |
| Trottier 5105 | Developer | |
| Troy Atkinson | Developer | |
| Troy Lyndon | Developer | |
| Troy Story Games | Developer | |
| Tru Blu Entertainment | DeveloperPublisher | |
| Tru Blu Games | DeveloperPublisher | |
| Truant Pixel | Publisher | |
| Truc_e | Developer | |
| True Emotions | Developer | |
| True Emotions Software | DeveloperPublisher | |
| True Games | Publisher | |
| True Soft | Developer | |
| True Soft (Inigo Ayo Blazquez, Juan Carlos Garcia) | Developer | |