| UNIFYEX LIMITED | Private company limited by shares | Live |
| Union (H.K.) Capital Market Limited | Private company limited by shares | Live |
| Vast Universe Co., Limited | Private company limited by shares | Live |
| VEGA UNION LIMITED | Private company limited by shares | Live |
| Hong Kong Glory Universe Technology Company Limited | Private company limited by shares | Live |
| COSCO SHIPPING UNIVERSE LIMITED | Private company limited by shares | Live |
| HONGKONG GALAXY UNION COMPANY LIMITED | Private company limited by shares | Live |
| Global University Alumni Association Limited | Private company limited by shares | Live |
| ASHDALE UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNITED WEALTH (ASIA) LIMITED | Private company limited by shares | Live |
| ELEMENTS UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNIFY MOTOR LIMITED | Private company limited by shares | Live |
| HK UNION CREDIT LIMITED | Private company limited by shares | Live |
| UNION FIDELITY CONSTRUCTION ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| SANXIN UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Hong Kong Beauty Industry Union Limited | Company limited by guarantee | Live |
| Ultra Universe Fashion Limited | Private company limited by shares | Live |
| Ultra Universe Tourism Limited | Private company limited by shares | Live |
| UNIQUE SPEED LIMITED | Private company limited by shares | Live |
| SMARTEN UNION CO., LIMITED | Private company limited by shares | Live |
| HEALTH UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| SUN UNITED MOTOR LIMITED | Private company limited by shares | Live |
| UNION HOPE (HK) LIMITED | Private company limited by shares | Live |
| UNIMED COMPANY LIMITED | Private company limited by shares | Live |
| Unicompex Limited | Private company limited by shares | Live |
| Unique Art Studio Limited | Private company limited by shares | Live |
| UNIVERSAL HORIZON LIMITED | Private company limited by shares | Live |
| UNIFRAME LIMITED | Private company limited by shares | Live |
| UNITED GROUP HOLDING COMPANY LIMITED | Private company limited by shares | Live |
| 101 Uniform Company Limited | Private company limited by shares | Live |
| UNION ZHONGRUN (INTERNATIONAL) FOOD LIMITED | Private company limited by shares | Live |
| Unity (VHHH) Limited | Private company limited by shares | Dissolved |
| MONTROSE UNIVERSAL LIMITED | Private company limited by shares | Live |
| OCEAN UNITED CAPITAL LIMITED | Private company limited by shares | Live |
| Universal Solution Service Limited | Private company limited by shares | Live |
| UNION CARBON CO., LIMITED | Private company limited by shares | Live |
| China Riders Mutual Aid Union Group Limited | Private company limited by shares | Live |
| Universal Interactive Technology Limited | Private company limited by shares | Live |
| Z&D United Brothers Limited | Private company limited by shares | Live |
| WELLBORO UNIVERSAL LIMITED | Private company limited by shares | Live |
| M Units Limited | Private company limited by shares | Live |
| Universal Digital Entertainment Co., Limited | Private company limited by shares | Live |
| Unichem Oil Company Limited | Private company limited by shares | Live |
| UNION FIRE CO., LIMITED | Private company limited by shares | Live |
| UNNNITY CORPORATION LIMITED | Private company limited by shares | Live |
| UNION GUOYIN GROUP LIMITED | Private company limited by shares | Live |
| HONGKONG BAIJIA AUTO PARTS UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNITEFOR-TECH CO., LIMITED | Private company limited by shares | Live |
| UNITED EXCEL LIMITED | Private company limited by shares | Live |
| GUIYUAN UNION TRADING CO., LIMITED | Private company limited by shares | Live |
| Universe Cross-Border Supply Chain Co., Limited | Private company limited by shares | Live |
| GOOD UNION LIMITED | Private company limited by shares | Live |
| Advanced Financial Union Limited | Private company limited by shares | Live |
| Universal Cosmetic Supply Chain Limited | Private company limited by shares | Live |
| HK ZHEN ROAD TO FACE THE UNITED STATES AND BIOTECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| TOP VISION UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNITI INVESTMENT LIMITED | Private company limited by shares | Live |
| UNISPER LIMITED | Private company limited by shares | Live |
| Hong Kong Sports Therapists Union Limited | Private company limited by shares | Live |
| UNION WEALTH INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |
| ASIA UNION SERVICES LIMITED | Private company limited by shares | Live |
| CHINA ZHONGCHUANG UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| United Systems Limited | Private company limited by shares | Live |
| Ability Union (International) Company Limited | Private company limited by shares | Live |
| TREASURE GRACE UNIVERSE COMPANY LIMITED | Private company limited by shares | Live |
| Height & Unity Capital Limited | Private company limited by shares | Live |
| China Union Arts Limited | Private company limited by shares | Live |
| UNIVERSAL FAME PROSPEROUS LIMITED | Private company limited by shares | Live |
| UNION ADVANCE LIMITED | Private company limited by shares | Live |
| SUCCESS UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| British American United Holdings (Group) Co., Limited | Private company limited by shares | Live |
| UNION GOOD (CHINA) LIMITED | Private company limited by shares | Live |
| PIONEER UNION LIMITED | Private company limited by shares | Live |
| GLOBAL UNION WEALTH CREATION LIMITED | Private company limited by shares | Live |
| HK UNION LOGISTICS LIMITED | Private company limited by shares | Dissolved |
| Union Petro International Trading Co., Limited | Private company limited by shares | Live Commenced dormancy on 06-Aug-2018 |
| GOOD UNION INTERNATIONAL LOGISTICS LIMITED | Private company limited by shares | Live |
| GREAT UNION MANAGEMENT LIMITED | Private company limited by shares | Live |
| UNION HILL PROPERTIES LIMITED | Private company limited by shares | Live |
| MAX UNION INC. LIMITED | Private company limited by shares | Live |
| UNICORNS DESIGN LIMITED | Private company limited by shares | Live |
| Best Union Industrial Company Limited | Private company limited by shares | Live |
| HONG KONG UNIHERTZ E-COMMERCE COMPANY LIMITED | Private company limited by shares | Live |
| United Standard Solar Technology Limited | Private company limited by shares | Live |
| UNION OLYMPIC LIMITED | Private company limited by shares | Live |
| Network Union Limited | Private company limited by shares | Live |
| UNITED POWER RESTAURANT LIMITED | Private company limited by shares | Live |
| WEBLEYWOOD UNIVERSAL LIMITED | Private company limited by shares | Live |
| Uni-opto Limited | Private company limited by shares | Live |
| CHINESE CAPITAL UNION FINANCIAL LIMITED | Private company limited by shares | Live |
| HK GRAND UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| IKON UNION PHARMA LIMITED | Private company limited by shares | Live |
| UNIVERSE IMPORT & EXPORT LIMITED | Private company limited by shares | Live |
| UNIVERSAL SUPPLY CHAIN MANAGEMENT CO., LIMITED | Private company limited by shares | Live |
| Ningbo Union Import & Export Co., Limited | Private company limited by shares | Live |
| Ants Union Limited | Private company limited by shares | Live |
| HK UNIQUE MANNEQUIN CO., LIMITED | Private company limited by shares | Live |
| Union Texong Company Limited | Private company limited by shares | Live |
| Uni-Resource International Co., Limited | Private company limited by shares | Live |
| Aimme United Company Limited | Private company limited by shares | Live |