| MELLON LIMITED | Private company limited by shares | Dissolved |
| Mellon Pet Limited | | Live |
| ABN AMRO MELLON ASIA LIMITED | Private company limited by shares | Dissolved |
| MELLON ASIA LIMITED | Private company limited by shares | Dissolved |
| HONGJI MELLON BROTHERS COMPANY LIMITED | | Live |
| MELLON CAPITAL LIMITED | Private company limited by shares | Live |
| Mellon Win Trade Co., Limited | Private company limited by shares | Live |
| MELLON ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| MELLON GROUP LIMITED | Private company limited by shares | Live |
| MELLON HILL LIMITED | Private company limited by shares | Live |
| MELLON HOLDING LIMITED | Private company limited by shares | Dissolved |
| Mellon Immigration Limited | Private company limited by shares | Live |
| MELLON INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| JACK MELLON INVESTMENT(CHINA)CO., LIMITED | Private company limited by shares | Live |
| BNY Mellon Managed Investments Limited | Private company limited by shares | Live |
| Mellon Technology Limited | Private company limited by shares | Live |
| MELLON INNOVATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| MELLONGI ELECTRONICS (HK) LIMITED | Private company limited by shares | Dissolved |
| ST. MELLONS LIMITED | Private company limited by shares | Dissolved |