| PROTEUS LIMITED | Private company limited by shares | Dissolved |
| Proteus Limited | Private company limited by shares | Live |
| PROTEUS ELECTRIC LIMITED | Private company limited by shares | Live |
| PROTEUS GROUP LIMITED | Private company limited by shares | Live |
| Proteus Digital Health Asia Limited | Private company limited by shares | Live |
| PROTEUS HOLDING LIMITED | Private company limited by shares | Live |
| PROTEUS INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| PROTEUS MARINE LIMITED | Private company limited by shares | Live |
| PROTEUS SHIPPING LIMITED | Private company limited by shares | Dissolved |
| PROTEUS SOLUTIONS LIMITED | Private company limited by shares | Live |
| PROTEUS SPORTS LIMITED | Private company limited by shares | Dissolved |
| VIRTUAL PROTEUS TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| PROTEUS TRADING HK LIMITED | Private company limited by shares | Live |
| PROTEUSASIA LIMITED | Private company limited by shares | Dissolved |