| Name | Region |
|---|---|
| UserCheck | |
| Userfirst OÜ | Harju |
| Usesoft | Harju |
| Uspacy OÜ | |
| Uvik | |
| UX LLC | |
| ValthSolution | |
| VanOnGo | |
| VeebiStudio | Harju |
| Velmio OÜ | Harju |
| Vendomar OÜ | Harju |
| Veriff | |
| Vertex Estonia AS | Harju |
| Vespia OÜ | |
| VinChain OÜ | |
| Virtuaal.com | Harju |
| Virtual Building | |
| VMK Tarkvara OÜ | Harju |
| Vocal Image OÜ | |
| Voicecom OÜ | Harju |
| Voog | |
| Vorante | |
| Voxloud OÜ | |
| Vscoped | |
| VT Labs | Harju |
| Vumonic Datalabs | |
| W3B Solutions | |
| Wafer Technologies | |
| Walks In Europe | |
| Wallester AS | |
| Warren | |
| WaveCom AS | Harju |
| Webabi | |
| Webcap Digitals | |
| Webcraft OÜ | |
| Webware OÜ | Harju |
| Weekdone | Tartu |
| Wellpin | |
| Werk IT OÜ | |
| Wert | |
| What the Flutter OÜ | Harju |
| Wild.Codes | |
| WiseDevs | |
| Wisnio | |
| Wordmark OÜ | |
| WriteMe.ai | |
| WTT Solutions | |
| WunderAds | Harju |
| Wyreweb OÜ | |
| X-Road |