| TTA | Gyeonggi |
| TTS Co., Ltd | Gyeonggi |
| TUNiB, Inc. | |
| TVSTORM, Inc. | Seoul |
| Twinpig Biolab, Inc. | |
| Txinno Bioscience, Inc. | |
| U1 University | |
| Uangel Corporation | Gyeonggi |
| Ubix Therapeutics | |
| Ucon Creative Co., Ltd | Ulsan |
| Uiduk University | |
| Ulsan College | |
| Ulsan Technopark | Ulsan |
| Unastella | Seoul |
| UNDBIO Co., Ltd | Gyeonggi |
| Unicorn Soft, Inc. | Seoul |
| Unioncommunity Co., Ltd | Seoul |
| Unique Sound Co., Ltd | Seoul |
| Unirobotics Co., Ltd | Gyeonggi |
| UNISEM | Gyeonggi |
| UNIST | Ulsan |
| UniTest, Inc. | Gyeonggi |
| University of Brain Education | |
| University of Gyeongnam Geochang | |
| University of Science and Technology. | |
| University of Seoul | Seoul |
| University of Suwon | |
| University of Ulsan | |
| University of Ulsan - Department of Mathematics | Ulsan |
| Unwired Korea, Inc. | Seoul |
| Upstage Co., Ltd | Gyeonggi |
| Uptempo Global | |
| UXR | Seoul |
| V Platform Investment Corporation | Seoul |
| Value Engineering Co., Ltd | Gyeonggi |
| VasThera Co., Ltd | Seoul |
| Vaxcell Bio | |
| VegaX Holdings | Seoul |
| Venture Box | Gyeonggi |
| VentureSquare | |
| ViaScope, Inc. | Seoul |
| Vieworks Co., Ltd | Gyeonggi |
| ViGenCell | |
| VINATech Co., Ltd | Jeonbuk |
| ViroCure | |
| Vision College of Jeonju | |
| VisualCamp | Seoul |
| VITO | Seoul |
| Vivozon, Inc. | Gyeonggi |
| Volta Automation | |