| UNIFOR HONG KONG LIMITED | Private company limited by shares | Live |
| GOLD UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| JOY UNITED LIMITED | Private company limited by shares | Dissolved |
| UNION OCEAN INTERNATIONAL (HONGKONG) CO., LIMITED | Private company limited by shares | Dissolved |
| EARN UNION LIMITED | Private company limited by shares | Dissolved |
| UNIQUE ASIA PACIFIC LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL GATEWAY LIMITED | Private company limited by shares | Dissolved |
| CITY UNION LOGISTICS HOLDING LIMITED | Private company limited by shares | Live |
| DRAGON UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIVERSAL OPTOELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| VICTORY UNION CONSULTATION LIMITED | Private company limited by shares | Dissolved |
| UPPER UNION HOLDING COMPANY LIMITED | Private company limited by shares | Live |
| Yome (Union) AC & Refrigerant Parts Limited | Private company limited by shares | Dissolved |
| UNIVERSAL SIGHT LIMITED | Private company limited by shares | Live |
| UNION LINK ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| FINE UNION WORLDWIDE LIMITED | Private company limited by shares | Dissolved |
| UNICO-6000 LIMITED | Private company limited by shares | Live |
| Unison Pacific Limited | Private company limited by shares | Live |
| SILVER UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| NORTH AMERICA UNIVERSITY SERVICE CENTER LIMITED | Private company limited by shares | Dissolved |
| UNITED HING YIP INTERNATIONAL FREIGHT FORWARDER (SHENZHEN) COMPANY LIMITED | Private company limited by shares | Live |
| H.K. UNION INTERNATIONAL EXHIBITION CO., LIMITED | Private company limited by shares | Live |
| UNION STAR HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| GLOBAL CHINESE ENTREPRENEURS UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| FRANCE TIANSHU USA UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNI-FORTUNE CAPITAL LIMITED | Private company limited by shares | Live |
| VENTURE UNITED LIMITED | Private company limited by shares | Dissolved |
| UNION DYNASTY LIMITED | Private company limited by shares | Live |
| UNIVERSAL TREASURE LIMITED | Private company limited by shares | Live |
| TOP UNICORN LIMITED | Private company limited by shares | Live |
| SUNSTAR UNION LIMITED | Private company limited by shares | Dissolved |
| DOMAIN UNION LIMITED | Private company limited by shares | Dissolved |
| WORLD CHINESE CULTURE & ART UNION LIMITED | Private company limited by shares | Dissolved |
| NATIONAL UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| FRANCE UNION LIHUA (H.K) LIMITED | Private company limited by shares | Dissolved |
| ORIENTAL UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| MEGA UNION ENGINEERING LIMITED | Private company limited by shares | Live |
| Oriental Union Int'l Industrial Limited | Private company limited by shares | Live |
| UNIESTAR LIMITED | Private company limited by shares | Live |
| UNIVERSAL MOULDINGS LIMITED | Private company limited by shares | Live |
| UNION KING (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNITECH INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| Leo United Holding Limited | Private company limited by shares | Live |
| CHINAWAY UNION LIMITED | Private company limited by shares | Dissolved |
| Corporate University Association Limited | Company limited by guarantee | Dissolved |
| NINGBO UNIQUE SEALS LIMITED | Private company limited by shares | Live |
| UNION DEVELOPMENT ENGINEERING INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNI-CONCEPT LIMITED | Private company limited by shares | Dissolved |
| TIME UNITED MANUFACTORY LIMITED | Private company limited by shares | Live |
| UNITED TALENT ASIA LIMITED | Private company limited by shares | Dissolved |
| UNITED BEST INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED WAY (CHINA) LIMITED | Private company limited by shares | Dissolved |
| UNION ACE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| Super Universe (HK) Limited | Private company limited by shares | Dissolved |
| UNIVERSAL BUDDHIST MERCIFUL ASSOCIATION LIMITED | Company limited by guarantee | Live |
| SAFETY PROTECTION UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| SUNLIGHT UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNITED CREATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG UNION INTERNATIONAL FURNITURE COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIGLOBE INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED MANUFACTURING GROUP LIMITED | Private company limited by shares | Dissolved |
| INTERNATIONAL UNION FOUNDATION LIMITED | Private company limited by shares | Dissolved |
| GLOBAL UNIVERSAL LIMITED | Private company limited by shares | Live |
| SINO-RESOURCE UNION TECH. COMPANY LIMITED | Private company limited by shares | Live |
| UNITED ASIA U.A LIMITED | Private company limited by shares | Live |
| UNITED ONE RESOURCES LIMITED | Private company limited by shares | Live |
| Universal Products Solutions Limited | Private company limited by shares | Live |
| UNION GROUP LIMITED | Private company limited by shares | Live |
| UNION GROUP ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| WORLD UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION FAVOUR INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| NEW UNIVERSE INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| PAN UNION LOGISTICS LIMITED | Private company limited by shares | Dissolved |
| UNITY WATERPROOF ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| GROUP UNITED LIMITED | Private company limited by shares | Live |
| UNI-CORPORATION LIMITED | Private company limited by shares | Live |
| UNION WIDE MARKET MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| UNION WIDE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIWORKS ASIA LIMITED | Private company limited by shares | Live |
| TIN MEN UNITED MANUFACTURING LIMITED | Private company limited by shares | Live |
| Total Union PCB Recycle Limited | Private company limited by shares | Live |
| UNION SEMICONDUCTOR (HK) LIMITED | Private company limited by shares | Live |
| UNION INT'L (HONGKONG) GROUP CO., LIMITED | Private company limited by shares | Live |
| WIDE UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION NATION INVESTMENTS LIMITED | Private company limited by shares | Live |
| SOUTH UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| HOST UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIQUE MOBILES LIMITED | Private company limited by shares | Dissolved |
| LOCAL UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| UNION SINO TRADING LIMITED | Private company limited by shares | Live |
| UNION LUCKY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| Universal ECPAY (Hong Kong) Limited | Private company limited by shares | Live |
| UNION WEALTHY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNITED (CHINA) INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ASSETS ASIA LIMITED | Private company limited by shares | Dissolved |
| UNITED FANCY LIMITED | Private company limited by shares | Dissolved |
| UGAIN UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNITED PACIFIC GROUP LIMITED | Private company limited by shares | Live |
| UNIK VISUALTEK LIMITED | Private company limited by shares | Dissolved |
| Union Consolidated Transport (Hong Kong) Limited | Private company limited by shares | Dissolved |