| Sparkle Design | Kiev |
| SPD Group | |
| SpdLoad | |
| Spintech Software | Kharkiv |
| Sportbank | Kiev |
| SRGH | Kiev |
| SSA Group | Kiev |
| StartEra | |
| StartIT training center | |
| Startup Depot | Lviv |
| Startup Jedi | |
| Startup Network | |
| Startup-Center Sumy State University | |
| SteepHost DC | Kharkiv |
| Stella Electronic | Kiev |
| Stellum Tech | Kharkiv |
| STM-studio | Dnipropetrovsk |
| Stolnitsky Ideas | Kiev |
| StopVirus | Kiev |
| Strider Labs Ltd | |
| Sumy State University | Sumy |
| Sven Украина | Kiev |
| Swetrix Analytics | |
| Syject | Kharkiv |
| Synergy Way | |
| Sypex | Kiev |
| SysGears | Dnipropetrovsk |
| TA Ventures | Kiev |
| TAGsoft | |
| Tanhost | Kiev |
| Tavex | Kiev |
| TBR Group | |
| TeamDev | Kharkiv |
| Tech Ukraine | |
| TecheXpert | Kiev |
| Techiia | |
| Technos LLC | Kiev |
| Telesens, Inc. | |
| Ternopil Ivan Puluj National Technical University | Ternopil |
| Terrasoft | Kiev |
| TestLab2 | Kiev |
| TexnoNews.com | Kiev |
| The Awesome Company | Kharkiv |
| The Kyiv Independent | |
| The Owners Group | |
| The Secret Circle Solutions | |
| theMakeApp | |
| theMakeApp | |
| ThePHPGuys | Kiev |
| Thyrol | |