| User 1st Limited | Private company limited by shares | Dissolved |
| USER GAIN LIMITED | Private company limited by shares | Live |
| USER HEALTHCARE LIMITED | Private company limited by shares | Live |
| INNOVATED USER LIMITED | Private company limited by shares | Live |
| USER STRATEGY LIMITED | Private company limited by shares | Live |
| Useralt Limited | Private company limited by shares | Live |
| USERAMIC INC LIMITED | Private company limited by shares | Live |
| U-Seraphim Company Limited | | Live |
| USERBASE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| USEReady Limited | Private company limited by shares | Live |
| USERFIT GLOBAL SOURCING LIMITED | Private company limited by shares | Live |
| USERJOY HONG KONG CO. LIMITED | Private company limited by shares | Live |
| AIRFREIGHT USERS ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| HK INTERNET USERS ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| CEA - THE ASSOCIATION OF COMPUTER USERS IN ENGINEERING, ARCHITECTURE AND RELATED FIELDS LIMITED | Company limited by guarantee | Dissolved |
| USERS FRIENDLY COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG MICROSOFT USERS GROUP LIMITED | Company limited by guarantee | Dissolved |
| SHENZHEN USERSTON TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UserTech Limited | Private company limited by shares | Live |
| U-SERVO LIMITED | Private company limited by shares | Live |