| TIC Online Marketing | |
| TicketSwap | |
| Tiemex Logistic Services B.V. | Gelderland |
| TiePie | Friesland |
| Ties.DB | South Holland |
| TIG | North Holland |
| TIIN Capital | |
| Tik & Klik Internetdiensten | Drenthe |
| Tilaa B.V. | Utrecht |
| Tilburg University | North Brabant |
| Tiledmedia | South Holland |
| TILER | South Holland |
| Timco Automatisering B.V. | North Holland |
| Timefold B.V. | |
| TimeTell | South Holland |
| TimeTuna | |
| Timewriter | Friesland |
| Tinbergen Institute | |
| TinyPNG | |
| TIOBE Software B.V. | North Brabant |
| TIQ B.V. | North Holland |
| Tiscom Hosting B.V. | Gelderland |
| Tizio | North Holland |
| TJIP The Platform Engineer | South Holland |
| Tm-Pro | North Holland |
| TMC Group B.V. | |
| TMDi | Gelderland |
| TMO | |
| TNO | |
| TNO-ESI | |
| TNX | South Holland |
| To Be Found | South Holland |
| To-Increase | Utrecht |
| ToBeOnline | Groningen |
| Today ISP B.V. | South Holland |
| TokenSuite | |
| Tollenaar Industries | |
| Toloka AI B.V. | |
| Tomahawk B.V. | |
| Tomassen ICT Services B.V. | Gelderland |
| TomTom International B.V. | North Holland |
| Tonny Media | |
| Toogethr | |
| ToolsGroup B.V. | |
| Toolshero | |
| Toool | |
| TopAI.tools | |
| Topic Embedded Systems | South Holland |
| Topnetworks InternetService | |
| Torro Studio | |