| PACIFIC DELTA OSTRICH LIMITED | Private company limited by shares | Dissolved |
| OSTRONG LIMITED | Private company limited by shares | Live |
| OSTUNI LIMITED | Private company limited by shares | Live |
| HONG KONG OSTV TRADING COMPANY LIMITED | | Live |
| OSTW (HONG KONG) TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Ostwald Trading International Limited | Private company limited by shares | Live |
| Ostyles Limited | Private company limited by shares | Live |
| OSUBE LIMITED | Private company limited by shares | Dissolved |
| OSUCCESS LIMITED | Private company limited by shares | Dissolved |
| Mark O'Sullivan Limited | | Live |
| O'SULLIVAN, PALMER & TURNER | Private unlimited company | Dissolved |
| OSULOR (CHINA) LIMITED | Private company limited by shares | Live |
| HK OSULOR (INT'L) DRESS LIMITED | Private company limited by shares | Dissolved |
| OSUN COMPANY LIMITED | Private company limited by shares | Dissolved |
| WENZHOU OSUN EYEWEAR LIMITED | Private company limited by shares | Live |
| O-Sung Limited | Private company limited by shares | Live |
| O-SUNG TRADING LIMITED | Private company limited by shares | Live |
| OSUNGO LIMITED | Private company limited by shares | Live |
| OSUPERSHOP.COM LIMITED | Private company limited by shares | Live |
| Osusume Official Store Limited | Private company limited by shares | Live |
| OSVALE LIMITED | Private company limited by shares | Dissolved |
| OSVehicle Limited | Private company limited by shares | Live |
| OSventure Capital Limited | Private company limited by shares | Live |
| OSWALD AND COMPANY, LIMITED | Private company limited by shares | Dissolved |
| SIR OSWALD CHEUNG MEMORIAL FUND | Company limited by guarantee | Live |
| OSWALD CONSULTING LIMITED | Private company limited by shares | Dissolved |
| OSWALD DESIGN LIMITED | Private company limited by shares | Dissolved |
| Oswald Global Limited | | Live |
| OSWALD TRADING (HK) COMPANY LIMITED | Private company limited by shares | Live |
| HONGKONG OSWALD CO., LIMITED | Private company limited by shares | Dissolved |
| Oswald International Trading Limited | Private company limited by shares | Live |
| OSWALD PROPERTY MANAGEMENT COMPANY LIMITED | Private company limited by shares | Live |
| OSWALD MARITIME SERVICES LIMITED | Private company limited by shares | Live |
| OSWALD SHIPPING COMPANY LIMITED | Private company limited by shares | Dissolved |
| OSWALD-CHINA CONSULTANCY SERVICES LIMITED | Private company limited by shares | Dissolved |
| OSWALDIAN LIMITED | Private company limited by shares | Dissolved |
| OSWALDS LIMITED | Private company limited by shares | Live |
| OSWEE Limited | Private company limited by shares | Live |
| OSWEGO LIMITED | Private company limited by shares | Dissolved |
| Oswego Consultancy Limited | Private company limited by shares | Live |
| OSWEGO OVERSEAS LIMITED | Private company limited by shares | Dissolved |
| OSWELL LIMITED | Private company limited by shares | Dissolved |
| OSWELL LIMITED | Private company limited by shares | Live |
| SHENZHEN OSWEY CO., LIMITED | Private company limited by shares | Live |
| OSWIN LIMITED | Private company limited by shares | Live |
| Oswin Asset Management Limited | Private company limited by shares | Live |
| OSWISE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| OSWISE TRADING LIMITED | Private company limited by shares | Dissolved |
| Osxilate Capital Limited | Private company limited by shares | Live |
| HK OSYI IMP&EXP LIMITED | Private company limited by shares | Live |
| OSYMAY LIMITED | Private company limited by shares | Dissolved |
| OSYNCA LIMITED | | Live |
| O-SYNCE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| OSZE COMPANY LIMITED | Private company limited by shares | Dissolved |
| OSZER (HK) CO., LIMITED | Private company limited by shares | Live |