| Koritsa | Kiev |
| Korzh.com | Kiev |
| Kover Agency | |
| Krakatets PRO | |
| Kramnica.com.ua | Kiev |
| Kray Technologies | |
| Kron | Kiev |
| Krootl | |
| KRyLack Software | Kiev |
| KTC | Kiev |
| KUKA | |
| Kycaid | |
| Kyiv Investment Agency | |
| Kyiv Investment Forum | |
| Kyiv IT Cluster | |
| Kyiv Medical University | |
| Kyiv National Linguistic University | |
| Kyiv School of Economics | Kiev |
| Kyivitcluster | |
| Kyivstar.Tech | |
| Kypitehniky | Kharkiv |
| Laboratory of Advanced Jet Propulsion | |
| LabTop Digital | Kiev |
| Lake of Soft | Kharkiv |
| Lambda Team | Dnipropetrovsk |
| Landing UA | |
| Languametrics, Inc. | Kiev |
| LearningPath.io | |
| LegitSeo | |
| Lemapp | Kiev |
| Lember | |
| Lemon School | |
| LemonFiles | Kherson |
| Leobit Design Studio | |
| Level UP Ukraine | |
| Libra Data Shelf | |
| LiluWeb Development Studio | |
| Limenet | |
| LimeSystems | |
| LineCome Systems | Kiev |
| Link Guard Solutions Ltd | Kiev |
| Linkup Studio | |
| Linkyway | |
| Linuxoid - все, что знаю о Туксе | Kiev |
| Lionwood.software | Lviv |
| Liraland Group | |
| Listat Software Development | Kiev |
| LivaRava | |
| Livatek | |
| Liza-Soft | Kiev |