| TONKA LIMITED | Private company limited by shares | Dissolved |
| TONKA ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| TONKAR COMPANY LIMITED | Private company limited by shares | Dissolved |
| TONKDALE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| TONKE LIMITED | Private company limited by shares | Dissolved |
| TONKEE LIMITED | Private company limited by shares | Live |
| TONKEY LIMITED | Private company limited by shares | Dissolved |
| Tonkie Precision Manufactory Company Limited | | Live |
| H. TONKIN AND COMPANY, LIMITED | Private company limited by shares | Dissolved |
| TONKIN LIMITED | Private company limited by shares | Live |
| H. TONKIN & COMPANY LIMITED | Private company limited by shares | Live |
| TONKIN CAPITAL LIMITED | Private company limited by shares | Dissolved |
| TONKIN DESIGN LIMITED | Private company limited by shares | Dissolved |
| TONKIN GULF INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Tonkin ITCM Co., Limited | Private company limited by shares | Live |
| TONKIN & TAYLOR (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| TONKIN RADIOCABS OPERATORS ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| Tonkinese Limited | | Live |
| TONKING LIMITED | Private company limited by shares | Live |
| TONKING SHIPPING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Tonkla Limited | | Live |
| Tonkn Trading Co., Limited | | Live |
| TONKO INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| TONKOON INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| TONKOTS INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Tonkotsu Ramen Limited | Private company limited by shares | Live |
| TONKWISE LIMITED | Private company limited by shares | Dissolved |
| TONKYO LIMITED | Private company limited by shares | Dissolved |
| TONKYO ENTERPRISE LIMITED | Private company limited by shares | Dissolved |