| Tech-Coder | Developer | |
| Tech-Noir | Developer | |
| TechDimension | Developer | |
| TechFront | Developer | |
| TechPiranja | Developer | |
| TechTeller | Developer | |
| TechTerraGames | Developer | |
| Techgames930 | Developer | |
| TechieCrow | Developer | |
| Techiku | Publisher | |
| Techland | DeveloperPublisher | |
| Techland Publishing | Publisher | |
| Techland Software | Developer | |
| Technical Banana | Developer | |
| Technical Group Laboratory | DeveloperPublisher | |
| Technical Wave | Developer | |
| TechnicialDifficulties | Developer | |
| Techno Arts (Manuel Gasco, David Brioso Santos) | Developer | |
| Techno Babel | Developer | |
| Techno Brain | DeveloperPublisher | |
| Techno Soleil | DeveloperPublisher | |
| TechnoCrafts Unlimited | Developer | |
| TechnoPixel | Developer | |
| TechnoSoft | DeveloperPublisher | |
| TechnoTeeHee | Developer | |
| Technobubble Entertainment | Publisher | |
| Technology Consultants | Developer | |
| Technology and Entertainment Software | Developer | |
| Technomancy Studios | Developer | |
| Technophobia studios | Developer | |
| Technopolis Soft | DeveloperPublisher | |
| Technopop | Developer | |
| Technos | Publisher | |
| Technos Japan | DeveloperPublisher | |
| Technosoft | DeveloperPublisher | |
| TechnosoftJP | Publisher | |
| Technostalgic | Developer | |
| Technōs | Publisher | |
| Technōs Japan | DeveloperPublisher | |
| Technōs Japan (JP) | Publisher | |
| Technōs Japan Corp | DeveloperPublisher | |
| Technōs Japan Corp. | Publisher | |
| Technōs Japan JP | Publisher | |
| Techstar | Publisher | |
| Techvania | Developer | |
| TeclaGames. Indie Games from Spain. | Developer | |
| Tecmo | DeveloperPublisher | |
| Tecmo Koei | DeveloperPublisher | |
| Tecmo, Ltd. | Publisher | |
| TecmoJP | Publisher | |