| OSMA ELEVATOR (CHINA) CO., LIMITED | Private company limited by shares | Live |
| Osma Energy Group (USA) Co., Limited | Private company limited by shares | Live |
| OSMA CONSULTING LIMITED | Private company limited by shares | Live |
| Taiwan Osma Environmental Protection Group Co., Limited | Private company limited by shares | Live |
| HONGKONG OSMA LIMITED | Private company limited by shares | Live |
| OSMA WORLDWIDE LIMITED | Private company limited by shares | Live |
| OSMAC ENGINEERS LIMITED | Private company limited by shares | Live |
| OSMAN LIMITED | Private company limited by shares | Live |
| OSMAN COMPANY LIMITED | | Live |
| OSMANAMENA GROUP OF COMPANIES LIMITED | Private company limited by shares | Live |
| Osmaniye Trading Co., Limited | | Live |
| OSMANTHUS COMPANY LIMITED | Private company limited by shares | Live |
| CL Osmanthus I Limited | Private company limited by shares | Live |
| CL Osmanthus II Limited | Private company limited by shares | Live |
| CL Osmanthus III Limited | Private company limited by shares | Live |
| Osmanthus HK Limited | | Live |
| OSMAR TRADING LIMITED | Private company limited by shares | Live |
| OSmart Cleanse Limited | | Live |
| OSMART CO., LIMITED | Private company limited by shares | Live |
| OSMART (HK) INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| OSMART INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| OSMAS BRUSH TECHNOLOGY (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UK O-SMAY WATER PROCESSING TECHNIQUE EQUIPMENTS LIMITED | Private company limited by shares | Dissolved |
| OSMEN PATIO FURNITURE LIMITED | Private company limited by shares | Live |
| Osment Technology Co., Limited | Private company limited by shares | Live |
| OSMIA (H.K.) LIMITED | Private company limited by shares | Live |
| Le Osmiaa (H.K.) Limited | Private company limited by shares | Live |
| OSMILES LIMITED | Private company limited by shares | Dissolved |
| Osmillennium Limited | Private company limited by shares | Live |
| Osmium Capital Limited | Private company limited by shares | Live |
| Osmium Consulting Group Limited | Private company limited by shares | Live |
| Osmium Institute Hong Kong Limited | | Live |
| OSMO COMPANY LIMITED | Private company limited by shares | Dissolved |
| Osmofactory Limited | | Live |
| OSMOND LIMITED | Private company limited by shares | Dissolved |
| R W OSMOND & ASSOCIATES LIMITED | Private company limited by shares | Live Commenced dormancy on 15-Mar-1999 |
| Osmond Drainage Limited | Private company limited by shares | Live |
| Osmond Property Company Limited | | Live |
| OSMOND TECHNOLOGY LIMITED | | Live |
| OSMOS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SO OSMOSE COLLECTION LIMITED | Private company limited by shares | Live |
| Osmoses Hong Kong Limited | Private company limited by shares | Live |
| Osmosia Limited | | Live |
| OSMOSIS LIMITED | Private company limited by shares | Dissolved |
| Osmosis Limited | Private company limited by shares | Live |
| Digital Osmosis Limited | Private company limited by shares | Live |
| Osmoslab Technologies Limited | Private company limited by shares | Live |
| OSMUIR LIMITED | Private company limited by shares | Dissolved |
| OSMUND LIMITED | Private company limited by shares | Dissolved |
| OSMUND CONSULTANT (ENG.) LIMITED | Private company limited by shares | Dissolved |
| OSMUND WOODWORKING MACHINERY LIMITED | Private company limited by shares | Dissolved |