| Tuna HK Limited | Private company limited by shares | Dissolved |
| RED TUNA LIMITED | Private company limited by shares | Live |
| Tuna Limited -The- | Private company limited by shares | Live |
| TUNA OS LIMITED | | Live |
| TUNA CREATIVE LIMITED | Private company limited by shares | Live |
| INSTRIMPEX TUNA FASHION CO., LIMITED | Private company limited by shares | Dissolved |
| Hungry Tuna Limited | Private company limited by shares | Live |
| PACIFIC TUNA LIMITED | Private company limited by shares | Live |
| STAY TUNA PUBLISHING LIMITED | Private company limited by shares | Live |
| TUNAFOR INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| TUNAN (H.K.) LIMITED | Private company limited by shares | Live |
| TUNANET INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Tunas Limited | | Live |
| TUNAS BERGUNA COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNATE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Tunatutu Limited | | Live |