| ORION MANAGEMENT GROUP LIMITED | Private company limited by shares | Live |
| ORION STRATEGIC MANAGEMENT CO. LIMITED | Private company limited by shares | Live |
| ORION MARBLE COMPANY LIMITED | | Live |
| ORION MARITIME CARRIERS LIMITED | Private company limited by shares | Dissolved |
| ORION METRO LIMITED | Private company limited by shares | Live |
| Monoceros Orion Limited | | Live |
| Orion Motors Limited | | Live |
| ORION NETWORK EXCHANGE LIMITED | | Live |
| ORION ONLINE LIMITED | Private company limited by shares | Live |
| Orion Outdoor Limited | Private company limited by shares | Live |
| ORION PACIFIC LIMITED | Private company limited by shares | Live |
| ORION (ASIA PACIFIC) LIMITED | Private company limited by shares | Dissolved |
| ORION (ASIA PACIFIC) LIMITED | Private company limited by shares | Live |
| ORION PLUS LIMITED | Private company limited by shares | Live |
| ORION OFFSET PRINTING LIMITED | Private company limited by shares | Dissolved |
| ORION PUBLICATIONS LIMITED | Private company limited by shares | Dissolved |
| ORION RESOURCES LIMITED | Private company limited by shares | Live |
| ORION RISING HK LIMITED | Private company limited by shares | Live |
| ORION ROYAL PACIFIC LIMITED | Private company limited by shares | Dissolved |
| ORION ENERGY SAVING HK LIMITED | Private company limited by shares | Dissolved |
| Orion Scuba Limited | Private company limited by shares | Live |
| ORION SEMI LIMITED | Private company limited by shares | Live |
| ORION SOLUTIONS LIMITED | Private company limited by shares | Live |
| ORION SOURCING COMPANY LIMITED | Private company limited by shares | Live |
| ORION SPACE LIMITED | Private company limited by shares | Live |
| Orion Spirit Limited | | Live |
| ORION STAR LIMITED | Private company limited by shares | Live |
| ORION STAR LINE LIMITED | Private company limited by shares | Dissolved |
| ORION LUCKY STAR LIMITED | Private company limited by shares | Live |
| ORION STARS LIMITED | Private company limited by shares | Live |
| ORION STPK LIMITED | | Live |
| ORION STUDIO LIMITED | Private company limited by shares | Live |
| ORION TECH HK LIMITED | Private company limited by shares | Live |
| ORION TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| Orion Technologies Limited | Private company limited by shares | Live |
| ORION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ORION INNOVATING TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ORION HONG KONG TOURS LIMITED | Private company limited by shares | Dissolved |
| ORION TRADE COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORION TRADING LIMITED | Private company limited by shares | Dissolved |
| ORION TRADING LIMITED | Private company limited by shares | Dissolved |
| ORION TRADING COMPANY LIMITED | Private company limited by shares | Live |
| Orion Trading HK Limited | Private company limited by shares | Live |
| Orion Asia Trading Limited | Private company limited by shares | Live |
| Orion Minerals Trading Limited | Private company limited by shares | Live |
| ORION RESOURCES (TRADING) LIMITED | Private company limited by shares | Live |
| Orion3 Founders Limited | Private company limited by shares | Live |
| ORIONATION DEVELOPMENT LIMITED | | Live |
| ORIONCOM LIMITED | Private company limited by shares | Live |
| ORIONIDS TRADING COMPANY LIMITED | Private company limited by shares | Live |
| ORION'S CREATIONS (H.K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORIONSON (HK) LIMITED | Private company limited by shares | Dissolved |
| OrionTek (china) Co., Limited | Private company limited by shares | Live |
| Orionway Limited | Private company limited by shares | Live |
| ORIONWAY HK LIMITED | Private company limited by shares | Live |
| Oriorcap Limited | Private company limited by shares | Live |