| UNKAI LIMITED | Private company limited by shares | Dissolved |
| UNKAR LIMITED | Private company limited by shares | Live |
| H. J. UNKEL LIMITED | Private company limited by shares | Live |
| UNKEMA (CHINA) LIMITED | Private company limited by shares | Live |
| UNKNOWN ADVERTISING LIMITED | | Live |
| UNKNOWN CHINA COMPANY LIMITED | Private company limited by shares | Live |
| unknown Creative Limited | Private company limited by shares | Dissolved |
| Dimension Unknown Limited | Private company limited by shares | Live |
| Unknown Pleasure Company Limited | Private company limited by shares | Dissolved |
| Unknown Creature Art Studio Limited | | Live |
| Unknown Galaxy (HK) Technology Limited | | Live |
| UNKNOWNZ CREATIVE LIMITED | Private company limited by shares | Live |
| UNKT LIMITED | | Live |