| TranziT471 | Developer | |
| Trapdoor | Publisher | |
| TrapdoorGames | Developer | |
| Trapped Nerve Games | Publisher | |
| Traptics | Developer | |
| Trash Panda | Developer | |
| TrashCanPete | Developer | |
| TrashCastle | Developer | |
| TrashEntity | Developer | |
| TrashGameStore | Developer | |
| Trashcan | Developer | |
| Trashgames | Developer | |
| Trashy Rascal Studios | Developer | |
| TrashyQueen | Developer | |
| Trasjfire Games | Developer | |
| Tratser | Developer | |
| TraumWerke | Developer | |
| Trauma Studios | Developer | |
| Traumendes_Madchen | Developer | |
| Traveller's Tales | Developer | |
| Travellers (John de Salis, Tony Huggard, Shaun McClure) | Developer | |
| Travellers Rest | Developer | |
| Travis Baldree | Developer | |
| Travis D. Hill | Developer | |
| Travis Fort | Developer | |
| Travis Root | Developer | |
| TravisChen | Developer | |
| Traxmaster Software | DeveloperPublisher | |
| Trazzy | Developer | |
| Treasure | DeveloperPublisher | |
| Treasure Co. Ltd | Developer | |
| Treasuresofgrinda | Developer | |
| Trecision | DeveloperPublisher | |
| Trecision S.p.A. | Developer | |
| Treco | DeveloperPublisher | |
| TrecoJP | Publisher | |
| TrecoNA | Publisher | |
| Tredain | Developer | |
| Tree Castle | Developer | |
| Tree Interactive | DeveloperPublisher | |
| TreeFall Studios | DeveloperPublisher | |
| TreeFortress Games | Developer | |
| Treecki | Developer | |
| Treeg0n (Treeangle) | Developer | |
| Treehouse Dreams | Developer | |
| Treehouse Studios | Developer | |
| TreeofLife | Developer | |
| Trei ☕ | Developer | |
| Trembjo | Developer | |
| Tremoid Games | Developer | |