| Three Times Infinite | Developer | |
| Three-Sixth Pacific | Publisher | |
| Three-Sixty Pacific | DeveloperPublisher | |
| Three-legged crow | Developer | |
| ThreeAnglePie | Developer | |
| ThreePixels | Developer | |
| Three_dots | Developer | |
| Threeli | Developer | |
| Threewave Software | Developer | |
| Threshold Seven | Developer | |
| Threstle | Developer | |
| Threye Interactive | DeveloperPublisher | |
| ThriftUterus | Developer | |
| ThrillDaWill | Developer | |
| Thrinmor | Developer | |
| Through Games | DeveloperPublisher | |
| ThroughLine Games | Developer | |
| ThroughTunnel | Developer | |
| Throw the Warped Code Out | DeveloperPublisher | |
| Throwback Entertainment | Publisher | |
| Throwback Games | Developer | |
| ThrowbackDev | Developer | |
| Thruster Games | Developer | |
| ThubyDev | Developer | |
| Thuleanx | Developer | |
| Thund | Developer | |
| Thunder Cloud Studio | Publisher | |
| Thunder Egg Concepts | Developer | |
| Thunder Lotus | Developer | |
| Thunder Lotus Games | DeveloperPublisher | |
| Thunder Mountain | DeveloperPublisher | |
| Thunder Mountain (company) | Publisher | |
| Thunder Perfect Witchcraft | Developer | |
| ThunderLime | Developer | |
| Thunder_Loud | Developer | |
| Thunder_Wood | Developer | |
| Thundercloud | Developer | |
| Thunderduck | Developer | |
| Thunderent | Developer | |
| Thunderfall Publishing | Publisher | |
| Thunderful | Publisher | |
| Thunderful Games | Publisher | |
| Thunderful Publishing | Publisher | |
| Thunderous Echo | Developer | |
| Thunderous Wizard Studios | Developer | |
| Thundersparks | Developer | |
| Thunderstruck Games | Developer | |
| Thur | Developer | |
| Thuranius | Developer | |
| ThyDuck | Developer | |