| Hug's | |
| Humanit.pro | |
| HURMA System | |
| HvOSTING | Kiev |
| I--ween | Kharkiv |
| IBS Управление предприятием | Kiev |
| iCORN | |
| Idealogic | Kiev |
| iForum | |
| iHUB | Kiev |
| Image-UA | Kiev |
| Imena.ua | Kiev |
| Imhoster.net | Kharkiv |
| Impact Hub Odessa | |
| Imperial ISP | Kiev |
| Impression | Kiev |
| Impulsar | |
| IN.UA | Kiev |
| INC4 | |
| IncoreSoft | |
| InDevLab | |
| INet-studio | Kiev |
| Infoart | Kiev |
| Infomir, LLC | Kiev |
| Infopulse Ukraine | Kiev |
| Infostroy Ltd | Kharkiv |
| Innovecs | Kiev |
| Inoxoft | Lviv |
| INP-Software | Zhytomyr |
| inSite | |
| INStitute of Advanced Research and Technologies | Kiev |
| Institute of Law Technology and Innovation | |
| INT24 Ltd | Volyn |
| Intecrator | |
| Integrity Vision | |
| Intelekt | Chernivtsi |
| Intellias | Lviv |
| Intellias | |
| IntelSoft Technologies, LLC | |
| Inter Business Finance | |
| Intercom | Dnipropetrovsk |
| International Research and Training Center for Information Technologies and Systems | Kiev |
| InternetDevels | Volyn |
| Interview.top | |
| Intraweb | Kiev |
| InVenture | |
| InVenture Investment Group | |
| Invest in Lviv | |
| InWest Agency, LLC | |
| IO Technologies | |