| UNITED PORT INVESTMENT LIMITED | Private company limited by shares | Live |
| UNIONSTAR INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| GLOBAL BUDDHISM BUSINESSMEN UNION LIMITED | Company limited by guarantee | Dissolved |
| CHINA SPORTSMAN (HONGKONG) UNION LIMITED | Company limited by guarantee | Live |
| UNIQUE CAPITAL LIMITED | Private company limited by shares | Dissolved |
| UNION GOOD INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION ASIA TRADING LIMITED | Private company limited by shares | Dissolved |
| BEL AIR UNION LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL LIGHTING LIMITED | Private company limited by shares | Dissolved |
| UNITED GROUP FOR BUSINESS LIMITED | Private company limited by shares | Live |
| UNI-LEADER SHIPPING CO., LIMITED | Private company limited by shares | Dissolved |
| CHINA UNITY INVESTMENT LIMITED | Private company limited by shares | Live |
| BM UNION COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| CHAMP UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ITALY YI BEI ER UNION DEVELOPMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| GROUP UNION CORPORATION LIMITED | Private company limited by shares | Live |
| UNION FIELD INTERNATIONAL INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL SECURITY PRODUCTS LIMITED | Private company limited by shares | Live |
| UNIVERSAL EXPRESS (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| UNION CHOICE CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION TEAM INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MAGIC LIMITED | Private company limited by shares | Live |
| UNISPEC LIMITED | Private company limited by shares | Live |
| EXCELLENT UNITED LIMITED | Private company limited by shares | Dissolved |
| UNION MACHINERY & ENGINEERING (ASIA) LIMITED | Private company limited by shares | Live |
| WELL UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNIQUE CARE PLUS COMPANY LIMITED | Private company limited by shares | Live |
| GOOD UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| UNIQUE WEALTH LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| UNITECH ELECTRIC GROUP LIMITED | Private company limited by shares | Live |
| FINE UNIVERSE ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION GAIN (H.K.) LIMITED | Private company limited by shares | Live |
| OCEAN UNION (H.K.) LIMITED | Private company limited by shares | Live |
| UNION JADE LIMITED | Private company limited by shares | Live |
| CROWN UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNIP LIMITED | Private company limited by shares | Live |
| ANGLO UNIVERSE COMPANY LIMITED | Private company limited by shares | Live |
| SEA UNION SHIPPING & TRADING CO., LIMITED | Private company limited by shares | Live |
| UNION BEST MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| UNITECH INC. LIMITED | Private company limited by shares | Live |
| UNION CHOICE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION CHINESE LIMITED | Private company limited by shares | Live |
| UNION BRIGHT INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION BRIGHT TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION BRIGHT INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION BRIGHT INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION SUPPO BATTERY (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHINA PUBLIC WELFARE UNION LIMITED | Private company limited by shares | Dissolved |
| UNITED BUSINESS OPERATING SYSTEMS LIMITED | Private company limited by shares | Live |
| UNION CHOICE LIMITED | Private company limited by shares | Live |
| UNION VANTAGE LIMITED | Private company limited by shares | Dissolved |
| UNION WISE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION WISE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ABLE UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| TOP UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| STAR UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| HONG KONG TOURISM PROFESSIONALS UNION LIMITED | Private company limited by shares | Dissolved |
| UNION PACIFIC MANUFACTURING LIMITED | Private company limited by shares | Live |
| SILVER UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION INTERNATIONAL INDUSTRY CO., LIMITED | Private company limited by shares | Dissolved |
| DRAGON UNION LIMITED | Private company limited by shares | Dissolved |
| UNITED SPARKLE (HK) FILM & VIDEO PRODUCTION LIMITED | Private company limited by shares | Live |
| UNITED VICTOR LIMITED | Private company limited by shares | Dissolved |
| UNION PEAK HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNIQUE STAR LIMITED | Private company limited by shares | Live |
| PROSPER UNION LIMITED | Private company limited by shares | Dissolved |
| UNISON ARTIC GALLERY LIMITED | Private company limited by shares | Live |
| CHINA UNIVERSE GROUP LIMITED | Private company limited by shares | Dissolved |
| BEST UNITY INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION CONCEPT INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION CONCEPT DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL CHINESE SPORT ASSOCIATION LIMITED -THE- | Private company limited by shares | Dissolved |
| PORT UNION CONTAINER LINE (CHINA) LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL PLUS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| GOLDEN UNION P.M.E CO., LIMITED | Private company limited by shares | Live |
| UNISON TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Live Commenced dormancy on 30-Jun-2008 |
| UNION MARK LIMITED | Private company limited by shares | Live |
| UNION GALAXY LIMITED | Private company limited by shares | Live |
| UNION SUPREME INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION PRIME INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| NATION UNICORN LIMITED | Private company limited by shares | Dissolved |
| UNION MARK INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL EXCHANGE TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIQUE FURNITURE CO. LIMITED | Private company limited by shares | Live |
| UNITEC ASIA LIMITED | Private company limited by shares | Live |
| UNIVERSE CENTURY PETROLEUM ENERGY GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION TONE LIMITED | Private company limited by shares | Dissolved |
| MAGIC UNLIMITED (H.K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED WAY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION SKY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| WIN UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| HONGKONG ETERNAL UNION GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION VIEW (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL CONTRACTORS LIMITED | Private company limited by shares | Dissolved |
| UNION FIELD INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SGL Universal Limited | Private company limited by shares | Dissolved |
| IPTV UNIVERSITY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL HOPE MACHINERY LIMITED | Private company limited by shares | Live |
| EASTERN UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |