| OneCallAway.Fitness Limited | | Live |
| ONECAN HK LIMITED | Private company limited by shares | Live |
| Onecap Limited | Private company limited by shares | Live |
| DB ONECAPITAL LIMITED | Private company limited by shares | Live |
| ONECAPITALASSET.COM LIMITED | Private company limited by shares | Live |
| ONE.CARD LIMITED | Private company limited by shares | Dissolved |
| 9F Onecard Limited | Private company limited by shares | Live |
| Hong Kong Onecard Co., Limited | Private company limited by shares | Live |
| ONE-CARD INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ONECARDTONE LIMITED | Private company limited by shares | Live |
| OneCare Group Limited | Private company limited by shares | Live |
| ONECARE TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| ONECE LIMITED | Private company limited by shares | Live |
| ONECENT NEWTECH LIMITED | Private company limited by shares | Live |
| Onecent Technology Co., Limited | Private company limited by shares | Live |
| OneChain Limited | | Live |
| 8T8 ONECHAMPION LIMITED | Private company limited by shares | Live |
| HONG KONG ONECHANCE E-COMMERCE LIMITED | Private company limited by shares | Live |
| ONECHANCE INDUSTRIAL LIMITED | Private company limited by shares | Live |
| oneCHARGE Solutions Limited | Private company limited by shares | Live |
| ONECHECK LIMITED | Private company limited by shares | Live |
| ONECHECK INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Onecherry Co., Limited | | Live |
| OneChipDx HK Limited | Private company limited by shares | Live |
| OneChoice Limited | | Live |
| ONECINE TEXTILES LIMITED | Private company limited by shares | Dissolved |
| ONECLICK ONLINE SERVICE LIMITED | Private company limited by shares | Live |
| OneClick Solutions Limited | | Live |
| OneClickBusiness Limited | Private company limited by shares | Live |
| OneClickPay Limited | Private company limited by shares | Live |
| oneCloud Limited | Private company limited by shares | Live |
| OneCo HK Limited | Private company limited by shares | Live |
| Onecode Limited | Private company limited by shares | Live |
| ONECOLOR CO., LIMITED | Private company limited by shares | Live |
| ONECOM ASIA LIMITED | Private company limited by shares | Dissolved |
| Ping An OneConnect Company Limited | Private company limited by shares | Live |
| Oneconnect System Limited | Private company limited by shares | Live |
| ONE-CONNECTION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| OneContact Limited | Private company limited by shares | Dissolved |
| OneCool Asia Limited | Private company limited by shares | Live |
| Onecool International Trading Co., Limited | Private company limited by shares | Live |
| ONECORP LIMITED | Private company limited by shares | Live |
| ONECOVE GMBH LIMITED | Private company limited by shares | Live |
| Onecredit Consulting Limited | Private company limited by shares | Live |
| ONECREW LIMITED | Private company limited by shares | Live |
| Onecrew Network Limited | Private company limited by shares | Live |