| Ettevõtte nimi | Reg. kood |
|---|---|
| QUANTEK OÜ | 11760990 |
| QUANTEM ANALYTICS OÜ | 14689092 |
| QUASTEK TECHNOLOGIES OÜ | 14514984 |
| QUARTET OÜ kustutatud | 14847964 |
| QUANSEC OÜ | 16849476 |
| QUANTIKY OÜ | 17578772 |
| QUATEKO OÜ | 12200247 |
| QUANTEST OÜ | 14836251 |
| QUANTIF OÜ | 17339375 |
| QUANTYX OÜ | 17512187 |
| QUARTER OÜ | 14554446 |
| QUANTUM OÜ kustutatud | 12306750 |
| QUARTEC OÜ kustutatud | 10877595 |
| QUANTUM OÜ kustutatud | 10961189 |
| QUANTOS OÜ kustutatud | 11520079 |
| QUANTO OÜ | 17276730 |
| OFFICE QUARTER OÜ kustutatud | 14188131 |
| QUANTUM GROUP OÜ kustutatud | 14220024 |
| QUANTUM FUNDS OÜ kustutatud (endine nimi QUANTUM VARAHALDUS OÜ) | 12852234 |
| QUANTUM-SYSTEMS OÜ kustutatud (endine nimi Q-Systems OÜ) | 17316612 |
| QUANTUM ELECTRONICS OÜ kustutatud | 12108837 |
| QUANTUM ICED OÜ (endine nimi Amazing Trading OÜ) | 12351741 |
| QUANTUM ICE OÜ | 16750051 |
| QUALITEK TESTING OÜ | 14305789 |
| FIRST QUANTUM OÜ (endine nimi Gazettiir OÜ) | 16205431 |
| QUANTUM PR OÜ | 17056004 |
| QUANTUM-SYSTEMS OÜ (endine nimi Sensus Septima OÜ) | 14949989 |
| QUANTUM BRANDS OÜ | 16832613 |
| QUANTUM INVEST OÜ | 12805565 |
| QUANTUM SATIS OÜ | 17399868 |
| QUANTUM NUTRITION OÜ (endine nimi J&S OÜ) | 11514067 |
| QUANTUM LEAP OÜ | 17099936 |
| QUANTUM EVENTS OÜ | 16745400 |
| MGC QUANTUM OÜ | 14249542 |
| QUANTUM MARKETING OÜ | 14144398 |
| FOOD QUARTER OÜ | 16569618 |
| QUANTUM CAPITAL OÜ | 10433148 |
| QUANTUM.UK OÜ | 14637758 |
| QUANTUM OUTDOOR OÜ | 17262690 |
| QUANTUM MEMORY OÜ | 16529010 |
| QUANTUM WAKE OÜ | 16627586 |
| QUANTUM PARTNERS OÜ | 14630451 |
| QUANTUM HORIZON OÜ | 16822773 |
| QUANTREV ANALYTICS OÜ | 17432778 |
| QUANTUM SWAN OÜ (endine nimi Block Research OÜ) | 14331108 |
| QUARTER1DEVELOPMENT OÜ | 14524907 |
| QUANTEVO TECHNOLOGIES OÜ | 17259788 |
| QUANTUM BRIDGE OÜ | 17032671 |
| QUANTUM FUGUE OÜ | 10705180 |
| QUANTUM STUDIUM OÜ (endine nimi Tall Est Tours OÜ) | 12210234 |