| ticketsell | Kiev |
| TMSoft Ltd | Kiev |
| Tod's Blog | Kiev |
| Toka | |
| ToniKa Design Studio | Vinnytsia |
| Topes | |
| TopWords - мобильный портал | Kiev |
| Total Commander UA | Kiev |
| Trendline | Kiev |
| Triffle.Net | Dnipropetrovsk |
| Trilogic net | Kiev |
| Tritel Ltd | |
| TrueCafe Ltd | Kharkiv |
| Trust Sourcing | Kiev |
| Trustech | |
| TutHost | Kiev |
| TvoyHosting | Kiev |
| Twin Win Games, LLC | |
| TYPO3 Блог | Kiev |
| UAATEAM | Kharkiv |
| UAdomen | Kharkiv |
| UAHosting | Kiev |
| Uamaster | Kiev |
| UAPLAY.com | Zaporizhzhia |
| UaStar | Dnipropetrovsk |
| uaToken | Kiev |
| UAtrade.net | Odessa |
| uCoz Web Services | Kiev |
| Ucrf.com.ua | Kiev |
| UDTech | |
| UFO Engineering | Odessa |
| UHost.com.ua | Kiev |
| UJ-Media | Kiev |
| UKIEPRO | Lviv |
| UkraineInvest | |
| Ukrainian Backbone Networks LLC | Kiev |
| Ukrainian Hi-Tech Initiative | Kiev |
| Ukrainian Internet Exchange | Kiev |
| Ukrainian Research and Academic Network | Kiev |
| Ukrainian Startup Fund | |
| Ukrainian Tech Ecosystem Overview | Kiev |
| Ukrainian Tech Ecosystem | |
| Ukrainian Venture Capital and Private Equity Association | |
| Ukrainian-American Concordia University | |
| UkrainianiPhone | Kiev |
| Ukrhard | Kiev |
| Ukrhost | Kiev |
| Ukrinsoft | Lviv |
| UnboltSoft | Dnipropetrovsk |
| Unibot | |