| ONELINK MASTER LIMITED | Private company limited by shares | Live |
| ONELINK CABLE NETWORK (ASIA) LIMITED | Private company limited by shares | Dissolved |
| ONELINK NETWORKS COMPANY LIMITED | Private company limited by shares | Live |
| ONELINK TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ONELINK TECHNOLOGY SOLUTION COMPANY LIMITED | Private company limited by shares | Dissolved |
| ONELINK TRADING LIMITED | Private company limited by shares | Live |
| ONElink Vacations Limited | Private company limited by shares | Dissolved |
| ONELINKUP ADVERTISING & ISOLUTION LIMITED | Private company limited by shares | Live |
| ONELINKUP GROUP LIMITED | Private company limited by shares | Live |
| ONELIVE LIMITED | Private company limited by shares | Live |
| ONELONG INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Oneloop Limited | | Live |
| OneLove Investments Limited | Private company limited by shares | Live |
| Onelux Technology Company Limited | Private company limited by shares | Live |
| ONELY LIMITED | Private company limited by shares | Live |
| ONELYE ELECTRONICS LIMITED | Private company limited by shares | Live |
| ONELYE HK GROUP LIMITED | Private company limited by shares | Live |
| 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 |
| ONENERGY LIMITED | Private company limited by shares | Live |
| ONENESS COMPANY LIMITED | Private company limited by shares | Live |
| Om Oneness Limited | Private company limited by shares | Live |
| ONENESS F&B LIMITED | | Live |
| ONENESS CAP LIMITED | | Live |
| Oneness Agency Limited | Private company limited by shares | Live |
| ONENESS CAPITALS COMPANY LIMITED | Private company limited by shares | Live |
| Oneness Charity Limited | | Live |
| S W Oneness Co., Limited | Private company limited by shares | Dissolved |
| ONENESS OVERSEAS CO., LIMITED | Private company limited by shares | Live |
| Oneness Consultancy Limited | Private company limited by shares | Live |
| ONENESS DESIGN & BUILD LIMITED | | Live |
| Oneness Health Limited | | Live |
| Oneness Way Healthcare Limited | Private company limited by shares | Live |
| ONENESS FILM INVESTMENT LIMITED | Private company limited by shares | Live |
| ONENESS LIVE COMPANY LIMITED | Private company limited by shares | Dissolved |
| ONENESS CAPITAL MANAGEMENT LIMITED | | Live |
| Oneness Catering Management Limited | Private company limited by shares | Live |
| Oneness Music Limited -The- | Private company limited by shares | Live |
| ONENESS POWER LIMITED | Private company limited by shares | Live |
| ONENESS FILM PRODUCTIONS LIMITED | Private company limited by shares | Live |
| ONENESS SHIPPING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Oneness Trading Limited | Private company limited by shares | Live |
| ONENET HK LIMITED | Private company limited by shares | Live |
| Onenet Asia Limited | Private company limited by shares | Live |
| TRANS ONE.NET PTE LIMITED | Private company limited by shares | Dissolved |
| ONENETWORK (ASIA) LIMITED | Private company limited by shares | Live |
| ONENEW (HK) ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| OneNew Technology Company Limited | Private company limited by shares | Live |
| ONE-NORTH ENTERTAINMENT LIMITED | Private company limited by shares | Live |
| OneOdio Company Limited | | Live |
| ONEOF INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| ONEON CAPITAL ( HONG KONG ) CO, LIMITED | Private company limited by shares | Live |
| OneOne Limited | Private company limited by shares | Live |
| Oneonebuy (China) Limited | Private company limited by shares | Live |
| OneOneOne Company Limited | Private company limited by shares | Live |
| OneOneSoup Company Limited | Private company limited by shares | Live |
| ONEOO CO., LIMITED | Private company limited by shares | Live |
| Oneopen ad Limited | | Live |
| ONEPAA LIMITED | Private company limited by shares | Live |
| OnePage Associates Limited | Private company limited by shares | Dissolved |
| OnePass Limited | Private company limited by shares | Live |
| OnePass Solutions Limited | Private company limited by shares | Live |
| OnePath Capital Limited | | Live |
| Onepay Global Limited | | Live |
| Onepay Pacific Limited | Private company limited by shares | Live |
| ONEPAY SOLUTIONS LIMITED | Private company limited by shares | Live |
| OnePayments Limited | Private company limited by shares | Live |
| ONEPEM PRECISION INDUSTRIAL (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| Onepem Precision Components (Hong Kong) Co., Limited | Private company limited by shares | Live |
| ONEPERSONALIZATION LIMITED | Private company limited by shares | Live |
| OnePiece Technology Limited | Private company limited by shares | Live |
| Onepiecesolution Limited | | Live |
| Onepile Limited | | Live |