| 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 |
| TUNBIRANCE LIMITED | Private company limited by shares | Dissolved |
| TUNBO ELECTRICS LIMITED | Private company limited by shares | Dissolved |
| TUNBOW LIMITED | Private company limited by shares | Live |
| TUNBOW ELECTRICAL LIMITED | Private company limited by shares | Live |
| TUNBOW ELECTRONICS LIMITED | Private company limited by shares | Live |
| TUNBOW ELECTRONICS INDUSTRY LIMITED | Private company limited by shares | Live |
| TUNBOW CHARITY FOUNDATION LIMITED | Company limited by guarantee | Live |
| TUNBOW GROUP LIMITED | Private company limited by shares | Live |
| TUNBOW PROPERTIES LIMITED | Private company limited by shares | Live |
| TUNBRIDGE LIMITED | Private company limited by shares | Dissolved |
| TUNBRIDGE ESTATES LIMITED | Private company limited by shares | Dissolved |
| TUNBROWN LIMITED | Private company limited by shares | Live |
| TUNCANG GROUP LIMITED | Private company limited by shares | Live |
| TUNDA ADVERTISING LIMITED | Private company limited by shares | Dissolved |
| TUNDER ELECTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNDERLY LIMITED | Private company limited by shares | Live |
| ADSALE TUNDERLY LIMITED | Private company limited by shares | Dissolved |
| Tunderly Advertising Co. Limited | Private company limited by shares | Live |
| SANPOH TUNDERLY COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNDEX INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| TUNDION COMPANY LIMITED | Private company limited by shares | Live |
| TUNDRA COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNDRA LIMITED | | Live |
| LIN TUNE COMPANY LIMITED | Private company limited by shares | Dissolved |
| LA TUNE LIMITED | Private company limited by shares | Live |
| TUNE KEY COMPANY LIMITED | Private company limited by shares | Dissolved |
| SKY TUNE COMPANY LIMITED | Private company limited by shares | Dissolved |
| SAM TUNE LIMITED | Private company limited by shares | Dissolved |
| TUNE IN LIMITED | Private company limited by shares | Dissolved |
| TUNE RAN LIMITED | Private company limited by shares | Live |
| TUNE UP LIMITED | Private company limited by shares | Live |
| CAR TUNE COMPANY LIMITED | Private company limited by shares | Live |
| FAR TUNE LIMITED | | Live |
| ASIA TUNE LIMITED | Private company limited by shares | Dissolved |
| Dare II Tune Company Limited | Private company limited by shares | Live |
| EASY TUNE LIMITED | Private company limited by shares | Live |
| EASY TUNE ENTERPRISES LIMITED | Private company limited by shares | Live Ceased dormancy on 13-May-2008 |
| SKY TUNE ENTERPRISES LIMITED | Private company limited by shares | Live |
| TUNE FIRST COMPANY LIMITED | Private company limited by shares | Dissolved |
| FIRST TUNE LIMITED | Private company limited by shares | Dissolved |
| TUNE FORTUNATE LIMITED | | Live |
| HAPPY TUNE LIMITED | Private company limited by shares | Live |
| MERRY TUNE COMPANY LIMITED | Private company limited by shares | Dissolved |
| POWER TUNE LIMITED | Private company limited by shares | Live |
| RICHIE TUNE LIMITED | Private company limited by shares | Dissolved |
| ROOTS TUNE COMPANY LIMITED | Private company limited by shares | Dissolved |
| Rotunix Tune Limited | Private company limited by shares | Live |
| SOLAR TUNE ENTERPRISE LIMITED | Private company limited by shares | Live |
| SPECIAL TUNE LIMITED | Private company limited by shares | Live |
| TUNE TRADE LIMITED | Private company limited by shares | Live |
| TUNEARN LIMITED | Private company limited by shares | Dissolved |
| TUNECHY LIMITED | Private company limited by shares | Dissolved |
| TUNECITY LIMITED | Private company limited by shares | Dissolved |
| STAY TUNED TECHNOLOGY LIMITED | Private company limited by shares | Live |
| TUNEFU INVESTMENT LIMITED | Private company limited by shares | Live |
| TUNEFUL COMPANY LIMITED | Private company limited by shares | Live |
| TUNEFUL JEWELLERY CO LIMITED | Private company limited by shares | Live |
| TUNEGEAR COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNELIGHT LIMITED | Private company limited by shares | Dissolved |
| TUNELSE COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNEMAN LIMITED | Private company limited by shares | Dissolved |
| Max Tuner HK Limited | Private company limited by shares | Live |
| Classic Tuner Limited | Private company limited by shares | Live |
| Tuner Technology Trading Co., Limited | Private company limited by shares | Live |
| TUNERAY COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNERCOM TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| TUNEROOT COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNES COMPANY LIMITED | Private company limited by shares | Live Commenced dormancy on 10-Mar-2016 |
| Eco Tunes Limited | Private company limited by shares | Live |
| TUNES ACADEMY LIMITED | Private company limited by shares | Live |
| Aromatic Tunes Company Limited | Private company limited by shares | Live |
| SKY TUNES AVIATION SERVICE LIMITED | Private company limited by shares | Live |
| WELL TUNES IMMIGRATION CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| TUNES ELECTRONICS LIMITED | Private company limited by shares | Live |
| WELL TUNES FINANCIAL GROUP LIMITED | Private company limited by shares | Live |
| FINE TUNES ENTERTAINMENT LIMITED | Private company limited by shares | Live |
| Macadam Tunes Cie - Limited | Private company limited by shares | Dissolved |
| POP TUNES MUSIC LIMITED | | Live |
| VIRAL TUNES GLOBAL ENTERTAINMENT LIMITED | Private company limited by shares | Live |
| TUNESON LIMITED | Private company limited by shares | Dissolved |
| TUNESONIC COMPANY LIMITED | Private company limited by shares | Live |
| Tuness Technology HK Limited | Private company limited by shares | Live |
| TUNETECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| TUNE-TO-WIN COMPANY LIMITED | Private company limited by shares | Dissolved |