| UNITED SUCCESS ASIA LIMITED | Private company limited by shares | Live |
| ELITE UNION LIMITED | Private company limited by shares | Live |
| UNITED U-ARK CLOUD SERVICE CO., LIMITED | Private company limited by shares | Live |
| Unisemi Limited | Private company limited by shares | Live |
| Unique digital entertainment Limited | Private company limited by shares | Live |
| CROWN DRAGON UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNIVERSAL VISTA LIMITED | Private company limited by shares | Live |
| HK UNITED PEACE ENTERPRISE CO., LIMITED | Private company limited by shares | Live |
| PORT UNION (H.K.) INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| Soft Universal Limited | Private company limited by shares | Live |
| Sea United Limited | Private company limited by shares | Live |
| FORTUNATE UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNBEATABLE DESIGN LIMITED | Private company limited by shares | Live |
| Hongkong Union Marketing Consultation Limited | Private company limited by shares | Live |
| UNITARY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNION BENEFIT LIMITED | Private company limited by shares | Live |
| EVER UNION CREATION LIMITED | Private company limited by shares | Live |
| WEALTH UNION PROPERTY CONSULTANTS LIMITED | Private company limited by shares | Live |
| VALUE UNION TRADING CO., LIMITED | Private company limited by shares | Live |
| Xinyouchuang United E-commerce Limited | Private company limited by shares | Live |
| CLAW UNION LIMITED | Private company limited by shares | Live |
| UNIKA GROUP COMPANY LIMITED | Private company limited by shares | Live |
| Universe (HK) Film&Television Co., Limited | Private company limited by shares | Live |
| UNITECH FX LIMITED | Private company limited by shares | Live |
| Amman Underwear Accessories Co., Limited | Private company limited by shares | Live |
| UNION FIDELITY CATERING LIMITED | Private company limited by shares | Live |
| UNIVERSAL EDUCATION GROUP LIMITED | Private company limited by shares | Live |
| UNION TECH INC. LIMITED | Private company limited by shares | Live |
| UNIVERSAL SHINER GROUP LIMITED | Private company limited by shares | Live |
| Asian Fitness Education Union Co., Limited | Private company limited by shares | Live |
| United Dutch Asia Company Limited | Private company limited by shares | Live |
| HK WIN UNION TECHNOLOGY GROUP LIMITED | Private company limited by shares | Live |
| Unexpected Jewels Limited | Private company limited by shares | Live |
| UNIGLOBAL AI BARAKA CO., LIMITED | Private company limited by shares | Live |
| WORLD TAOIST UNION LIMITED -THE- | Company limited by guarantee | Live |
| UNION COMMUNICATION CO., LIMITED | Private company limited by shares | Live |
| Excellent Quality Maid Agency Union Limited | Private company limited by shares | Live |
| YU MING UNIVERSAL CO., LIMITED | Private company limited by shares | Live |
| UNICHI HONG KONG PTY LIMITED | Private company limited by shares | Live |
| UNION TREND LIMITED | Private company limited by shares | Live |
| UNION BLOOM CAPITAL LIMITED | Private company limited by shares | Live |
| Union Trust Hong Kong Limited | Public company limited by shares | Live |
| Underwriting Agencies of Hong Kong Limited | Private company limited by shares | Live |
| HISCO UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNILEVER COMPANY LIMITED | Private company limited by shares | Live |
| UNIKEY ACADEMY LIMITED | Private company limited by shares | Live |
| Union Smart Home Chain Co., Limited | Private company limited by shares | Live |
| HK Fullsun Universal Company Limited | Private company limited by shares | Live |
| Union Standard Group Limited | Private company limited by shares | Live |
| GALAXY UNION LIMITED | Private company limited by shares | Live |
| CITY UNION (HK) LIMITED | Private company limited by shares | Live |
| UNIVERSE SUPREME LIMITED | Private company limited by shares | Live |
| UNIHAPPY GLOBAL SOURCING LIMITED | Private company limited by shares | Live |
| HONGKONG UNION INDUSTRIAL DEVELOPMENT CO., LIMITED | Private company limited by shares | Live |
| Universe International Consulting Limited | Private company limited by shares | Live |
| Uniall International Limited | Private company limited by shares | Live |
| Unmanned Technology Co., Limited | Private company limited by shares | Live |
| HK Universal Industry CO., LIMITED | Private company limited by shares | Live |
| 5G UNIVERSE LIMITED | Private company limited by shares | Live |
| Wisdom Union Group Limited | Private company limited by shares | Live |
| UNITED ERA LIMITED | Private company limited by shares | Live |
| DAZHONGXIAO UNIVERSE WAN YOU ELECTROMAGNETIC FIELD HYBRID DA SCIENCE LIMITED | Private company limited by shares | Live |
| VANUATU UNLOCKED INVESTMENT AND IMMIGRATION LIMITED | Private company limited by shares | Live |
| HK WEST UNION ELECTRONIC TECH ENTERTAINMENT LIMITED | Private company limited by shares | Live |
| LAS UNIKORE LIMITED | Private company limited by shares | Live |
| UNLIMITED REVENUE LIMITED | Private company limited by shares | Live |
| UNION WALL INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| UNITED FAMILY LIMITED | Private company limited by shares | Live |
| Five Men Universe Group Limited | Private company limited by shares | Live |
| Good Union Capital Co., Limited | Private company limited by shares | Live |
| ORIENT UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| VICTORY UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| WIN UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| UNITED DRAGON (ASIA) LIMITED | Private company limited by shares | Live |
| uNature Limited | Private company limited by shares | Live |
| UNITED ELECTRIC HK LIMITED | Private company limited by shares | Live |
| UNION WAY HONG KONG INVESTMENT LIMITED | Private company limited by shares | Live |
| UNIQUE BEAUTY HK LIMITED | Private company limited by shares | Live |
| WORLD BRAND UNION GROUP LIMITED | Private company limited by shares | Live |
| UNVEIL LIMITED | Private company limited by shares | Live |
| HONGKONG UNIYLE HOLDINGS GROUP CO., LIMITED | Private company limited by shares | Live |
| Union Global Registration Limited | Private company limited by shares | Live |
| Mr. Underwear Textiles Company Limited | Private company limited by shares | Live |
| FAITHFUL UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNICOFFEE LIMITED | Private company limited by shares | Live |
| UNIQUE TRADEING CO., LIMITED | Private company limited by shares | Live |
| Unionplus Industrial Limited | Private company limited by shares | Live |
| Asia Pacific United Medical Group Co., Limited | Private company limited by shares | Live |
| UNITED JET LIMITED | Private company limited by shares | Live |
| CRYSTAL UNION LIMITED | Private company limited by shares | Live |
| SUPER UNION TECHNOLOGY CORP. LIMITED | Private company limited by shares | Live |
| YAT UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| UNITED CLASSIC LIMITED | Private company limited by shares | Live |
| MAX UNITED LIMITED | Private company limited by shares | Live |
| China Fans Union Association Co., Limited | Private company limited by shares | Live |
| TAI UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| A ROAD & BELT CHINESE MERCHANTS UNION LIMITED | Private company limited by shares | Live |
| Universe Powerful Engineering Company Limited | Private company limited by shares | Live |
| Unlimited IOT Limited | Private company limited by shares | Live |
| Union Music Limited | Private company limited by shares | Live |