| 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 |