| Tahoe | Lower Silesian |
| Tailwind Elements | |
| TakeDrop | |
| TakeTask | |
| Talent Alpha Sp. z o.o. | |
| TalentMedia Sp. z o.o. | |
| Talex S.A. | Greater Poland |
| Tango Agency | Lesser Poland |
| Tanie-Stronki.pl | Lesser Poland |
| Tap Anywhere Sp. z o.o. | |
| Tap2Pay.me | |
| Tar Heel Capital Pathfinder Group | |
| Tarnowska Szkoła Wyższa Akademia Nauk Stosowanych | |
| Tarnowski Ośrodek Informacyjny | Lesser Poland |
| Tato Studio Sp. z o.o. | |
| TatukGIS Sp. z o.o. | Pomeranian |
| TAX-NET | |
| TaxMachine | Silesian |
| TBD MAZOWSZE Sp. z o.o. | Masovian |
| TDJ Pitango Ventures | |
| TDSOFT | Łódź |
| TeaCode | |
| TEAM S.C. | Greater Poland |
| Teamnet | West Pomeranian |
| TeBIT | Lower Silesian |
| Tech Data Polska Sp.z.o.o. | |
| Tech to the Rescue Foundation | |
| Tech3camp | |
| TECHBASE Group Sp. z o.o. | Pomeranian |
| Techcloud Sp. z o.o. | |
| Techland S.A. | |
| Techland S.A. | |
| TechMac | Masovian |
| Techmo | |
| TechNet | Warmian-Masurian |
| Technetium | Subcarpathian |
| Techniserv Sp. z o.o. | Silesian |
| Technokabel S.A. | |
| Technologie Internetowe S.A. | Masovian |
| Technology Accelerator Gliwice ASI Sp. z o.o. | |
| Technology Partners | |
| Technopark Pomerania | West Pomeranian |
| Techpol-System | |
| TechRecruiters | |
| Techsource Sp. z o.o. | |
| Techstack | |
| TechVigo | Masovian |
| Techvoip | Greater Poland |
| Tecra Space | |
| Tekom Technologia | Masovian |