| Oneman Limited | Private company limited by shares | Live |
| ONEMAR CNC MACHINERY LIMITED | Private company limited by shares | Dissolved |
| ONEMARK BRAND INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| ONE.MARKET LIMITED | Private company limited by shares | Dissolved |
| Onemay (China) Limited | Private company limited by shares | Live |
| ONEMAZE LIMITED | Private company limited by shares | Live |
| ONEMC LIMITED | Private company limited by shares | Live |
| ONEME GROUP LIMITED | Private company limited by shares | Dissolved |
| OneMed Company Limited | Private company limited by shares | Live |
| ONEMED TRADE (HK) COMPANY LIMITED | | Live |
| ONEMEDHUB FAR EAST LIMITED | Private company limited by shares | Dissolved |
| ONEMEDIA LIMITED | Private company limited by shares | Dissolved |
| ONEMEDIA ASIA LIMITED | Private company limited by shares | Dissolved |
| OneMemo HK Limited | Private company limited by shares | Dissolved |
| ONEMIND LIMITED | Private company limited by shares | Dissolved |
| ONEMIND LIMITED | | Live |
| ONEMO LIMITED | | Live |
| SAMSUNG ONEMO TECHNOLOGY (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| ONEMOB LIMITED | Private company limited by shares | Live |
| ONEMOB GROUP Limited | | Live |
| Onemobi Limited | Private company limited by shares | Live |
| Top One-Mold Company Limited | Private company limited by shares | Live |
| Onemon Trade Limited | Private company limited by shares | Live |
| OneMoney Capital Investment Management Co., Limited | Private company limited by shares | Live |
| ONEMORE LIMITED | Private company limited by shares | Live |
| ONEMORE CONSULTANTS LIMITED | Private company limited by shares | Live |
| ONEMORE TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Live |
| TOP ONE-MOULD LIMITED | Private company limited by shares | Live |
| ONEMT HONG KONG LIMITED | Private company limited by shares | Live |