| Company name | Reg. code |
|---|---|
| ORIN OÜ | 12601957 |
| ORINA EHITUS OÜ (former name MPM Holding OÜ) | 16174995 |
| ORION OÜ | 16806018 |
| ORION UNIVERSITY OÜ | 17072956 |
| ORION SYSTEMS OÜ kustutatud | 14860663 |
| ORION BETA OÜ | 16473462 |
| ORION CAPITAL OÜ | 10779833 |
| ORION REISID OÜ | 10703381 |
| ORION DELTA OÜ | 16551914 |
| ORION INVEST OÜ | 12634000 |
| ORIEN TRADE OÜ (former name Asian Market OÜ) | 12733937 |
| ORION FINANTS OÜ kustutatud | 12238994 |
| ORION DEVELOP OÜ | 14446030 |
| ORION BALTIC OÜ | 11190529 |
| ORION TRANSPORT OÜ | 16896168 |
| ORION MOTORS OÜ | 16951370 |
| MASTER-ORION OÜ | 10128327 |
| ORION LIINAMÄELT OÜ | 16470558 |
| ORION ENTERPRISES OÜ kustutatud | 14728521 |
| ORION KINNISVARA OÜ | 14620025 |
| ORIO PUHASTUS OÜ | 16178421 |
| ORIEN TRADE SELFCARE OÜ | 14949328 |
| ORIEN TRADE EESTI OÜ (former name Orien OÜ) | 12727776 |
| ORION INFORMATION GOVERNANCE OÜ | 14196515 |
| ORION PHARMA EESTI OÜ | 10872400 |
| ORION CARGO TRANS OÜ (former name Chipcoin OÜ) | 16242604 |
| ORION JA HAAR OÜ kustutatud | 11908168 |
| BACIU FLORESTI OÜ (former name ORION KAUBANDUS OÜ) | 14415957 |
| ORINDERO OÜ kustutatud | 12674979 |
| "ORINVEST-M" OÜ kustutatud | 10030338 |
| ORINOCO GRUPP OÜ | 11364188 |
| ORINOCO STUDIOS OÜ | 17293979 |
| SORIN OÜ | 16302482 |
| MORIN OÜ | 14362341 |
| OFRIN OÜ kustutatud | 10434343 |
| OTRIN OÜ | 12777426 |
| ORPIN OÜ kustutatud | 14056576 |
| ROIN OÜ kustutatud | 10256887 |
| ODIN 7 OÜ | 17048324 |
| ORUN OÜ | 12847262 |
| ÖRN OÜ | 12800898 |
| ARIN SERVICE OÜ kustutatud | 12346991 |
| ARIN HULGI OÜ | 10315868 |
| ERIN TEENUSED OÜ | 11555882 |
| ODIN INSIGHTS OÜ kustutatud | 16428838 |
| ORDIN SYSTEMS OÜ | 14809538 |
| ODIN EHITUS OÜ | 16383523 |
| GRIN STUDIO OÜ | 12261817 |
| GRIN INDUSTRI OÜ kustutatud | 12243274 |
| ODIN DEFENCE OÜ | 17332930 |