| Tokyo Future University | |
| Tokyo Gakugei University | |
| Tokyo Healthcare University | |
| Tokyo Information Service Co., Ltd | Tokyo |
| Tokyo Institute of Technology | |
| Tokyo Institute of Technology - Department of Computational Intelligence and Systems Science | Tokyo |
| Tokyo Institute of Technology - Department of Mathematical and Computing Sciences | Tokyo |
| Tokyo Institute of Technology - Department of Mathematics | Tokyo |
| Tokyo Institute of Technology - Global Scientific Information and Computing Center | Tokyo |
| Tokyo International Business College | |
| Tokyo International University | |
| Tokyo Junshin School Corporation | |
| Tokyo Kasei Gakun University | Tokyo |
| Tokyo Kasei University | |
| Tokyo Keizai University | |
| Tokyo Management College | |
| Tokyo Medical University | |
| Tokyo Metropolitan College of Industrial Technology | |
| Tokyo Metropolitan Industrial Technology Research Institute | Tokyo |
| Tokyo Metropolitan Institute of Gerontology | |
| Tokyo Metropolitan Institute of Medical Sciences | |
| Tokyo Metropolitan Public University Corporation | Tokyo |
| Tokyo Metropolitan University | Tokyo |
| Tokyo Polytechnic University | |
| Tokyo Robotics Co., Ltd | Tokyo |
| Tokyo Seiei College | |
| Tokyo Seimitsu Co., Ltd | Tokyo |
| Tokyo Seitou University | |
| Tokyo Systems Co., Ltd | Tokyo |
| Tokyo Systems Development Co., Ltd | Tokyo |
| Tokyo Techies Co., Ltd | Tokyo |
| Tokyo University of Agriculture | |
| Tokyo University of Agriculture and Technology | |
| Tokyo University of Foreign Studies | |
| Tokyo University of Information Sciences | |
| Tokyo University of Marine Science and Technology | |
| Tokyo University of Pharmacy and Life Sciences | |
| Tokyo University of Sciences | |
| Tokyo University of Technology | |
| Tokyo Woman’s Christian University | |
| Tokyo Women's Medical University | |
| Tokyo Zokei University | |
| Tokyu Alliance Platform | |
| Tomen Devices Corporation | Tokyo |
| Tomoegawa Co., Ltd | Tokyo |
| Tomorrow Net Co., Ltd | Tokyo |
| Tomy Digital Biology Co., Ltd | Tokyo |
| Tonami Internet Service Coralnet | Toyama |
| Toor Co., Ltd | Fukushima |
| Toppan Co., Ltd | Tokyo |