| UNLIMAX (HONG KONG) TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNION RISE INTERNATIONAL HONGKONG CO., LIMITED | Private company limited by shares | Live |
| UNIBANCA MEDIA HONGKONG LIMITED | Private company limited by shares | Live |
| UNIVERSAL E-BUSINESS SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| Unified Trading Group, Limited | Private company limited by shares | Dissolved |
| KnK Universal Limited | Private company limited by shares | Dissolved |
| NEW UNION POWER LIMITED | Private company limited by shares | Dissolved |
| CHINA AUTOMOTIVE INDUSTRY UNION RESEARCH LIMITED | Private company limited by shares | Dissolved |
| INJAZ UNIVERSAL COMPANY LIMITED | Private company limited by shares | Live |
| UNION REPAIR TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Swift Union International Commerce Limited | Private company limited by shares | Live |
| UNIHANK OPTICS-ELECTRICAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE BUSINESS COMPANY LIMITED | Private company limited by shares | Live |
| CHINA UNIPIPE COMPANY LIMITED | Private company limited by shares | Live |
| Union Wealth Technology Limited | Private company limited by shares | Dissolved |
| Wai Union Engineering & Trading Company Limited | Private company limited by shares | Live |
| AFRICAN UNION FOR EXPORT AND TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| JAPAN UNION OIL (CHINA) LIMITED | Private company limited by shares | Live |
| Buddhism Cultural Foundation Union Limited | Private company limited by shares | Dissolved |
| UNIVERSAL-UNITE DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION CREATION INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| WORLD UNION VISION GROUP LIMITED | Private company limited by shares | Live |
| STEM UNION INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| GERMANY DERATON UNITED TECHNOLOGIES GROUP CO., LIMITED | Private company limited by shares | Live |
| KALMAR UNION DENMARK HOME CO., LIMITED | Private company limited by shares | Live |
| China Union Industrial (Asia) Limited | Private company limited by shares | Live |
| UNITED WEALTH AND FINANCIAL LIMITED | Private company limited by shares | Live |
| FRIENDS UNION GARMENT LIMITED | Private company limited by shares | Dissolved |
| HEALTH UNION GROUP LIMITED | Private company limited by shares | Dissolved |
| KWONG WING UNION LIMITED | Private company limited by shares | Live |
| UNION INTERNATIONAL BABY-CARE LIMITED | Private company limited by shares | Live |
| Unicomm Limited | Private company limited by shares | Dissolved |
| Friend Union (HK) Investment Co., Limited | Private company limited by shares | Live |
| NORTH BAY UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION GLOBAL INVESTMENT (HK) LIMITED | Private company limited by shares | Live |
| HONGKONG OVERSEAS CAPITAL UNITED INVESTMENT GROUP LIMITED | Private company limited by shares | Live |
| UNIR Apartments Limited | Private company limited by shares | Live |
| UNIFORWARD ENTERPRISE LIMITED | Private company limited by shares | Live |
| UNION CREATION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| HFF UNION (HK) LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL INTELLECT LIMITED | Private company limited by shares | Live |
| ADVANCE UNION HOLDING LIMITED | Private company limited by shares | Dissolved |
| SHINETSU UNION HONG KONG LIMITED | Private company limited by shares | Live |
| UNBENDING INDUSTRY HK CO., LIMITED | Private company limited by shares | Live |
| UNITED IDEAS LIMITED | Private company limited by shares | Live |
| United Maritime Service Limited | Private company limited by shares | Live |
| UNION SQUARE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL EAST LIMITED | Private company limited by shares | Dissolved |
| UNION STRONG MARINE GROUP LIMITED | Private company limited by shares | Live |
| Union Capital Group Limited | Private company limited by shares | Live |
| UniCorp Enterprises Limited | Private company limited by shares | Live |
| Union Seafood Trading Company Limited | Private company limited by shares | Dissolved |
| L&C Universal Co., Limited | Private company limited by shares | Dissolved |
| UNIVERSAL HARBOUR INVESTMENT LIMITED | Private company limited by shares | Live |
| UNICARED TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Union of Chinese Confucian Entrepreneurs Co., Limited | Private company limited by shares | Live |
| Mega Union Technology Corporation Limited | Private company limited by shares | Live |
| SINO UNION INTERNATIONAL EXCHANGE LIMITED | Private company limited by shares | Dissolved |
| Yicai United Company Limited | Private company limited by shares | Live |
| JULAC Joint Universities Research Archive Limited | Company limited by guarantee | Live |
| PEACE UNION HOLDING (HK) LIMITED | Private company limited by shares | Live |
| RENEWABLE UNITED CO., LIMITED | Private company limited by shares | Live |
| CHINESE COLLECTORS UNION LIMITED | Private company limited by shares | Live |
| Universal Ship Management (China) Limited | Private company limited by shares | Dissolved |
| SOUTH UNION INDUSTRY DEVELOPMENT CO., LIMITED | Private company limited by shares | Live |
| UNICORN COMPANY LIMITED | Private company limited by shares | Dissolved |
| CCC Universal Limited | Private company limited by shares | Live |
| BUSINESS UNION FINANCE SERVICE HOLDING LIMITED | Private company limited by shares | Live |
| UNITED RESOURCE MEDICAL INTERNATIONAL INVESTMENT CO., LIMITED | Private company limited by shares | Live |
| UNIVERSAL SPORTS MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| Uniwhale Entertainment Company Limited | Private company limited by shares | Dissolved |
| Y&H UNION TECH GROUP LIMITED | Private company limited by shares | Live |
| UNION BRIGHT CONSULTANTS LIMITED | Private company limited by shares | Live |
| UNI-Green Limited | Private company limited by shares | Live Commenced dormancy on 06-Aug-2013 |
| Unicom Resources Limited | Private company limited by shares | Live |
| WORLD ECOSYSTEM ENVIRONMENTAL PROTECTION UNION LIMITED | Private company limited by shares | Dissolved |
| UNION POWER ENERGY COMPANY LIMITED | Private company limited by shares | Live |
| BEST UNION CORPORATION LIMITED | Private company limited by shares | Live |
| UniqueCellPhone Limited | Private company limited by shares | Live |
| UNION CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION INTERNATIONAL HOLDING CO., LIMITED | Private company limited by shares | Live |
| UNITED GULF INVESTMENT LIMITED | Private company limited by shares | Live |
| CENTRE OF THE UNIVERSE PRODUCTIONS LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Architectural Design Union Limited | Company limited by guarantee | Live |
| SMART UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| MBC UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| China United Wealth Gold & Silver Limited | Private company limited by shares | Dissolved |
| UNITED WISDOM GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNIVERSUS ASIA LIMITED | Private company limited by shares | Dissolved |
| International Slow Life Union Co., Limited | Private company limited by shares | Live |
| UNIGLOBE ENGINEERING LIMITED | Private company limited by shares | Live |
| UNIVERSE OCEAN SHIPPING LIMITED | Private company limited by shares | Live |
| Expert Union Engineering Limited | Private company limited by shares | Dissolved |
| JC UNION SHIPPING CO., LIMITED | Private company limited by shares | Dissolved |
| VIRTUE UNION COMPANY LIMITED | Private company limited by shares | Live |
| UNICON GLOBAL LOGISTICS (HK) LIMITED | Private company limited by shares | Live |
| GLOBAL UNIQUE LIMITED | Private company limited by shares | Live |
| UNITECH (CHINA) INT'L LIMITED | Private company limited by shares | Live |
| CJK TRADING UNITED LIMITED | Private company limited by shares | Dissolved |