| Company name | Reg. code |
|---|---|
| Q2L OÜ | 17434174 |
| Q.K.L OÜ | 16598991 |
| Q&L ENGINEERING OÜ | 14296292 |
| Q2 LAND OÜ | 17091343 |
| QUU LEGAL OÜ (former name Legal Aid OÜ) | 12327427 |
| Q2 LAND A2 OÜ | 17120984 |
| Q2 LAND A3 OÜ | 17119834 |
| Q2 LAND A4 OÜ | 17119413 |
| Q2 LAND A5 OÜ | 17121469 |
| Q2 LAND A6 OÜ | 17127513 |
| LR QUALITY OÜ | 11435089 |
| QANTO LABS OÜ | 17221308 |
| QLOUD LABS OÜ kustutatud | 12948974 |
| QUBIT LABS OÜ | 14079287 |
| QUOD LICET OÜ | 17222897 |
| QT LIMITED OÜ | 14311887 |
| Q2 LAND A1A OÜ | 17119840 |
| LX QUALITY OÜ kustutatud | 16806581 |
| QTB LINGUA OÜ kustutatud | 12248432 |
| QKG LIMITED OÜ kustutatud | 16289089 |
| QUALITY LAB OÜ | 12902908 |
| QUANTUM LEAP OÜ | 17099936 |
| QX LOGISTICS OÜ kustutatud | 11431826 |
| QRONOS LEADS OÜ | 17457330 |
| Q LINE INVEST OÜ kustutatud | 11542170 |
| LINK QUALITY OÜ | 11829664 |
| QUICK LOGISTIC OÜ kustutatud | 11995998 |
| QUATTRO LUXORY OÜ (former name IMPI Projekt OÜ) | 16758455 |
| LA QUEEN BEAUTY OÜ | 14199057 |
| QUALITY LOGGING OÜ kustutatud | 12473790 |
| Q-STEP LOGICIEL OÜ | 12626348 |
| QUADRANT LAW FIRM OÜ kustutatud | 16488133 |
| LYSICON QUANTURE OÜ | 17275416 |
| QUANLOOP LEASING OÜ (former name Waldo Leasing OÜ) | 12660397 |
| QUALITY LIVESTOCK OÜ (former name Quailty Livestock OÜ) | 14936627 |
| QUARTIER SAINT LOUIS OÜ | 14867843 |
| QUICKPORT LOGISTICS OÜ | 14381158 |
| QUINGUINDA LAKUISAKUA OÜ (former name Cheintrans OÜ) | 16875048 |
| PRIME MARINE SERVICE OÜ (former name Lepapoi OÜ) | 12974894 |
| NGOUMSANE BALLABEY OÜ (former name QUANTUM LOGISTICS OÜ) | 11646627 |
| QUANTITATIVE SOLUTIONS LAB OÜ (former name Quantative Solutions Lab OÜ) | 16261046 |
| SYNLAB EESTI OÜ (former name QUATTROMED HTI LABORID OÜ) | 11107913 |
| ZEBROLL12 OÜ kustutatud (former name Q-haus Tootmise OÜ) | 12439273 |
| GERMANMEDI OÜ (former name QueenShop Ltd OÜ) | 14825632 |
| QUALITY LABEL MANUFACTURING OÜ | 11898197 |