| ONGA LIMITED | Private company limited by shares | Dissolved |
| ONGAIN COMPANY LIMITED | Private company limited by shares | Dissolved |
| ONGAIN LIMITED | Private company limited by shares | Live |
| ONGAIN CORPORATION LIMITED | Private company limited by shares | Live |
| ONGAIN (H.K.) LIMITED | Private company limited by shares | Dissolved |
| ONGAIN (H.K.) LIMITED | Private company limited by shares | Live |
| ONGAIN INTERNATIONAL INVESTMENT HOLDINGS LIMITED | Private company limited by shares | Live |
| ONGAIN INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Ongan Limited | Private company limited by shares | Dissolved |
| ONGATE ENTERPRISE LIMITED | Private company limited by shares | Live |