Companies
- Trion Worlds, Inc.
- TriOviz
- Triple Topping
- Tripledot Studios
- Tripwire Interactive
- Triternion
- True Gamers
- True Games
- Truly Social Games
- TT Games
- TTK Games
- Tuna Technologies
- Turbine Entertainment
- Turbine, Inc.
- Turbine, Inc. | WB Games
- Turbulent
- Turbulenz Limited
- Turn 10 Studios
- Turner Broadcasting
- Turtle Beach
- Turtle Rock Studios
- Tuxedo Labs
- Twelve Interactive
- Twin Galaxies International
- Twin Sails Interactive