| Oreana Financial Services Limited | Private company limited by shares | Live |
| Oreanda Limited | Private company limited by shares | Dissolved |
| OREAS LIMITED | Private company limited by shares | Live |
| OREASIA LIMITED | Private company limited by shares | Dissolved |
| Oreaya Clothes (HK) Limited | Private company limited by shares | Live |
| Orebro Limited | Private company limited by shares | Live |
| OREC LIMITED | Private company limited by shares | Live |
| ORECA ASIA LIMITED | Private company limited by shares | Live |
| ORECHART LIMITED | Private company limited by shares | Dissolved |
| ORED LIGHTING CO., LIMITED | Private company limited by shares | Live |
| ORED TRADE (HK) CO., LIMITED | | Live |
| HONG KONG ORED CO., LIMITED | Private company limited by shares | Dissolved |
| AUSTRALIA OREDA CHEMICAL FERTILIZER (GROUP) LIMITED | Private company limited by shares | Dissolved |
| ORedP International Limited | | Live |
| Oree Asia Limited | Private company limited by shares | Live |
| GERMANY OREE (CASTROL) GROUP HOLDING LIMITED | Private company limited by shares | Dissolved |
| OREE ENTERPRISE CO LIMITED | Private company limited by shares | Live |
| Oreeginalo Limited | | Live |
| OREEX TELECOMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| LYONS OREFICE LIMITED | Private company limited by shares | Dissolved |
| GRAND OREFICERIA JEWELLERY COMPANY LIMITED | Private company limited by shares | Live |
| OREFN INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| OREGAN LIMITED | Private company limited by shares | Dissolved |
| OREGANO LIMITED | Private company limited by shares | Dissolved |
| Oregano Limited | Private company limited by shares | Live |
| Music O'Region Limited | | Live |
| OREGON ENTERPRISES LIMITED | Private company limited by shares | Live |
| MR. OREI COMPANY LIMITED | Private company limited by shares | Live |
| AZ Orei Asia Limited | Private company limited by shares | Live |
| OREIF LIMITED | Private company limited by shares | Dissolved |
| O'REILLY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Oreimintal Resources Co., Limited | | Live |
| Orel Limited | Private company limited by shares | Live |
| Orel North Asia Limited | Private company limited by shares | Live |
| Orel Resources Limited | Private company limited by shares | Live |
| ORELAND DEVELOPMENT LIMITED | Private company limited by shares | Live |
| ORELAND PRODUCTS MANUFACTORY LIMITED | Private company limited by shares | Live |
| Oreland Resources Limited | Private company limited by shares | Live |
| ORELIX LIMITED | Private company limited by shares | Live |
| ORELLA LIMITED | Private company limited by shares | Dissolved |
| OREM LIMITED | Private company limited by shares | Dissolved |
| OREM INTERNATIONAL (HK) LIMITED | Private company limited by shares | Dissolved |
| OREMA POWER CO., LIMITED | | Live |
| Orema Group Limited | Private company limited by shares | Live |
| OREMA POWER LIMITED | Private company limited by shares | Live |
| Oremise Limited | Private company limited by shares | Live |
| OREN LIMITED | | Live |
| ORENBURG ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ORENBURG ENTERPRISES COMPANY LIMITED | Private company limited by shares | Dissolved |
| RUSSIA ORENBURG INT'L CHEMICAL GROUP LIMITED | Private company limited by shares | Dissolved |
| Orenda HK Limited | | Live |
| Orendity Limited | Private company limited by shares | Live |
| ORENO LIMITED | Private company limited by shares | Live |
| Oreno International (Hong Kong) Limited | Private company limited by shares | Live |
| Oreno Xiao Nan Guo International (Hong Kong) Limited | Private company limited by shares | Live |
| ORENTAL TOWER LIMITED | Private company limited by shares | Dissolved |
| OREON LIMITED | Private company limited by shares | Live |
| OREPU INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| HONGKONG ORERS HOLDING GROUP LIMITED | Private company limited by shares | Live |
| ORES HK LIMITED | Private company limited by shares | Live |
| Oresco Limited | Private company limited by shares | Dissolved |
| ORESIN INTERIORS LIMITED | Private company limited by shares | Live |
| ORESOME LIMITED | Private company limited by shares | Live |
| ORESTILLA LIMITED | Private company limited by shares | Live |
| ORETA Limited | Private company limited by shares | Live |
| ORETON INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ORETTE, LIMITED | Private company limited by shares | Dissolved |
| ORETZE LIMITED | Private company limited by shares | Dissolved |
| OREVER RESOURCES CO., LIMITED | Private company limited by shares | Dissolved |
| OREVER PROSPER SHARES LIMITED | Private company limited by shares | Live |
| OREVIDA LIMITED | Private company limited by shares | Live |
| OREX LIMITED | | Live |
| OREX ASIA LIMITED | Private company limited by shares | Dissolved |
| OREXPAC LIMITED | Private company limited by shares | Dissolved |
| OREZAAR COMPANY LIMITED | Private company limited by shares | Live |
| ORFA ASIA PACIFIC LIMITED | Private company limited by shares | Dissolved |
| ORFAS LIMITED | Private company limited by shares | Dissolved |
| ORFEAS MARITIME AGENCY LIMITED | Private company limited by shares | Dissolved |
| ORFEAS SHIPPING AGENCY AND TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORFET LIMITED | Private company limited by shares | Live |
| Orfevre Capital Limited | Private company limited by shares | Live |
| Orff Infinity Limited | Private company limited by shares | Live |
| Orff 4 Kids Limited | Private company limited by shares | Live |
| Orffa Hongkong Limited | Private company limited by shares | Live |
| INTERNATIONAL ORFF-SCHULWERK MUSIC EDUCATION GROUP LIMITED | Private company limited by shares | Live |
| ORFI CAPITAL LIMITED | Private company limited by shares | Live |
| ORFIN TRADING LIMITED | Private company limited by shares | Live |
| HK OR-FM CONSULTING LIMITED | | Live |
| ORFORD LIMITED | Private company limited by shares | Dissolved |
| Orford Co., Limited | Private company limited by shares | Live |
| ORFORD REFRIGERATION PTY., LIMITED | Private company limited by shares | Dissolved |
| ORFORDNESS LIMITED | Private company limited by shares | Dissolved |
| TLR DESIGN ORG. LIMITED | Private company limited by shares | Dissolved |
| O.R.G. INVESTMENT (H.K.) LIMITED | Private company limited by shares | Live |
| ORG29 Limited | | Live |
| Orga Limited | | Live |
| OrgaDomus Products Limited | Private company limited by shares | Live |
| Orgahat Organic Beauty Technology Limited | Private company limited by shares | Live |
| Orgain APAC Pte Limited | Private company limited by shares | Live |
| ORGALOGIC CONSULTING LIMITED | Private company limited by shares | Dissolved |