| Company name | Reg. code |
|---|---|
| STUDIUM OÜ | 10320253 |
| MENRVA STUDIUM OÜ | 16377066 |
| COMBRE STUDIUM OÜ | 17385961 |
| QUANTUM STUDIUM OÜ (former name TallEst Incentive Travel OÜ) | 12210234 |
| RATASKAEVU STUDIUM OÜ | 14180891 |
| A&ALIF STUDIUM OÜ | 12553589 |
| VR STUUDIUM OÜ (former name BSR Tartu Kardihall OÜ) | 14174198 |
| STUUDIUM-S OÜ kustutatud | 10097584 |
| STUDION OÜ | 16037821 |
| 372 STUDIO OÜ | 12213020 |
| 57STUDIO OÜ | 14548210 |
| STUDIO208 OÜ kustutatud | 14856331 |
| STUDIO 2 OÜ | 10226419 |
| 44 STUDIO OÜ | 16066627 |
| STUDIO83 OÜ (former name Pro LVL OÜ) | 12916402 |
| STUDIO 27 OÜ | 17389172 |
| STUDIO 92 OÜ | 16765526 |
| STUDIO783 OÜ | 14896365 |
| STUDEM OÜ | 12822687 |
| STUDIO 369 OÜ | 14578754 |
| STUDIA OÜ | 10103244 |
| STUDIO89 OÜ (former name Oleme Teel OÜ) | 12292893 |
| STUDIO43 OÜ | 17104867 |
| STUDIO 202 OÜ | 16245784 |
| STUDIO1522 OÜ | 12629358 |
| STUDIO 3 OÜ | 10841605 |
| STUDIO 86 OÜ | 12404004 |
| STUDIO28 OÜ | 14060164 |
| 1STUDIO OÜ kustutatud | 12920467 |
| STUDIO 1089 OÜ | 14250048 |
| STUDIO13 OÜ | 12529243 |
| STUDIO 33 OÜ (former name Studio Glamour OÜ) | 14315546 |
| STUDIO 23 OÜ | 16406023 |
| STUDIO365 OÜ | 14733574 |
| CONSULTING STUDIOS OÜ | 16978067 |
| ABSTRA STUDIOS OÜ | 17078087 |
| LJK STUDIOS OÜ kustutatud | 16343433 |
| TEST STUDIOS OÜ | 17037786 |
| STREAMPUNK STUDIOS OÜ | 16202496 |
| INSPIRO STUDIOS OÜ | 17109965 |
| PIXWARD STUDIOS OÜ | 16325000 |
| BOLT STUDIOS OÜ | 12702954 |
| APPEVO STUDIOS OÜ kustutatud | 12534770 |
| NORTHNET STUDIOS OÜ kustutatud | 12157617 |
| LIVID STUDIOS OÜ | 10629779 |
| CASTLING STUDIOS OÜ kustutatud (former name Game Studio Tiga OÜ) | 14087565 |
| ACODE STUDIOS OÜ | 16626249 |
| STORMBRINGER STUDIOS OÜ | 12535829 |
| BABIL STUDIOS OÜ | 16128883 |
| PRIMEVAL STUDIOS OÜ | 16020192 |