| OBERA (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| Oberfood Market (Tai Wai) Limited | Private company limited by shares | Live |
| Germany Oberg Beer (China) Co., Limited | | Live |
| OBERKRAFT INTERNATIONAL LIMITED | Private company limited by shares | Live |
| OBERLANE LIMITED | Private company limited by shares | Dissolved |
| USI OBERLIN LIMITED | Private company limited by shares | Dissolved |
| OBERLIN LIMITED | Private company limited by shares | Dissolved |
| OBERON LIMITED | Private company limited by shares | Dissolved |
| OBERON CO., LIMITED | Private company limited by shares | Live |
| Oberon Holding Limited | Private company limited by shares | Live |
| OBERON SHIPPING LIMITED | Private company limited by shares | Dissolved |
| OBERON SHIPPING AND TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Obers Industrial Development Co., Limited | Private company limited by shares | Live |
| Obersee Private Limited | | Live |
| HONG KONG OBERSON BIOTECHNOLOGY CO., LIMITED | | Live |
| OBERSPORT LIMITED | Private company limited by shares | Live |
| OBERSTON LIMITED | Private company limited by shares | Dissolved |
| OBERTEX LIMITED | Private company limited by shares | Dissolved |
| OBERTON PRO LIMITED | | Live |
| OBERTON INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| OBERWALE TRADE LIMITED | | Live |
| Oberweis Asset Management (Asia) Limited | Private company limited by shares | Live |