| HNR Universal Company Limited | Private company limited by shares | Live |
| UNIVERSAL PLAYGROUND LIMITED | Private company limited by shares | Live |
| UNITED R & M HOLDING LIMITED | Private company limited by shares | Live |
| UNIVERSAL TOP PRODUCTS LIMITED | Private company limited by shares | Live |
| UNITED BEAUTY CO., LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ASIA PACIFIC INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| WORLD PEOPLE UNION LIMITED | Private company limited by shares | Live |
| LEAD UNION LIMITED | Private company limited by shares | Dissolved |
| WEALTH UNITED LIMITED | Private company limited by shares | Dissolved |
| UNION TOUR BUS LIMITED | Private company limited by shares | Dissolved |
| UNITED OCEAN TRADING LIMITED | Private company limited by shares | Live |
| GOLD UNION INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION GLORY INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| UNITED SMART TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION RICH DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNITY DIGITAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| UBM UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNION VICTORY PROPERTIES LIMITED | Private company limited by shares | Live |
| Unitedguard Limited | Private company limited by shares | Dissolved |
| OCEAN UNION TRADING (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNI-WINNER LIMITED | Private company limited by shares | Dissolved |
| UNION RUBBER CO., LIMITED | Private company limited by shares | Live |
| UNITED NATIONS ASEAN EMERGENCY RESCUE & MATERIAL PROCUREMENT TRADING PLATFORM LIMITED | Private company limited by shares | Live |
| HONOUR UNION LIMITED | Private company limited by shares | Live |
| UNION GRACE LIMITED | Private company limited by shares | Dissolved |
| COMPASS UNITED LIMITED | Private company limited by shares | Live |
| UNION BEST INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| UNIWAY LIMITED | Private company limited by shares | Live |
| UNCLE SAM LIMITED | Private company limited by shares | Live |
| UNION ONE RESOURCES CO., LIMITED | Private company limited by shares | Live |
| UNION WORLD CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| EVER UNION CORPORATION LIMITED | Private company limited by shares | Live |
| United Asia Nursing Care Limited | Private company limited by shares | Dissolved |
| UNIVERSAL WORLDEVENTS ASIA LIMITED | Private company limited by shares | Live |
| UNIFLEX COMPANY LIMITED | Private company limited by shares | Live |
| UNITRANS FREIGHT SOLUTION LIMITED | Private company limited by shares | Live |
| M & A UNION LOGISTICS (H.K.) CO., LIMITED | Private company limited by shares | Live |
| SUPER TRI UNION ENTERPRISE COMPANY LIMITED | Private company limited by shares | Live |
| UNIC ENTERPRISES PTY LIMITED | Private company limited by shares | Dissolved |
| UNION WELL (H.K.) LIMITED | Private company limited by shares | Live |
| UNI-SUCCESS INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| UNION POWERIC GROUP LIMITED | Private company limited by shares | Live |
| CENTRAL UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| Cranford Universal Limited | Private company limited by shares | Dissolved |
| HONGKONG WORLD UNION INTERNATIONAL TRADE LIMITED | Private company limited by shares | Dissolved |
| UNION FORTUNE INTERNATIONAL MINERAL RESOURCES LIMITED | Private company limited by shares | Dissolved |
| UNION FINE DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION TACT LIMITED | Private company limited by shares | Live |
| UNIVERSE ASSOCIATION (HK MAIN OFFICE) LIMITED | Company limited by guarantee | Live |
| UNIK-STYLE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ACE UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNITED OCEAN TRANSPORTATION LIMITED | Private company limited by shares | Live |
| INTERNATIONAL UNION EXPRESS LIMITED | Private company limited by shares | Live |
| China Innovation Enterprise Unions Limited | Private company limited by shares | Dissolved |
| GAIN UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| COHERENT UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNITED MASTER INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED RICH INVESTMENT LIMITED | Private company limited by shares | Live |
| MILLION UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIVERSAL (CAPITAL MANAGEMENT) LIMITED | Private company limited by shares | Live |
| unEARthed Asia Limited | Private company limited by shares | Dissolved |
| KINGWAY UNION ELECTRONIC GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| UNION STOCK COMPANY LIMITED | Private company limited by shares | Live |
| UNIVERSAL SOURCING COMPANY LIMITED | Private company limited by shares | Live |
| UNION LEADER TRADING LIMITED | Private company limited by shares | Live |
| STAR UNITED LIMITED | Private company limited by shares | Live |
| United Umbrella Limited | Private company limited by shares | Live |
| AA UNITED CAPITAL LIMITED | Private company limited by shares | Dissolved |
| HARMONIOUS UNION LIMITED | Private company limited by shares | Live |
| UNITED SKY (CHINA) LIMITED | Private company limited by shares | Live |
| ASIAN UNION INT'L BUSINESS CO., LIMITED | Private company limited by shares | Dissolved |
| UNION FAITH (H.K.) LIMITED | Private company limited by shares | Live |
| STAR UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNIVERSAL RETAIL LIMITED | Private company limited by shares | Live |
| UNITEK ASIA LIMITED | Private company limited by shares | Live |
| UNION BRIGHT INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| UNITED PEACE LIMITED | Private company limited by shares | Live |
| HONG KONG WONDER UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| BONEX UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNISMART INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION SUCCESS GARMENT LIMITED | Private company limited by shares | Dissolved |
| UNION BEST INDUSTRIAL (HK) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVEX HOLDING LIMITED | Private company limited by shares | Dissolved |
| YIDE (UNION) INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| UNION RISE HK CORPORATE LIMITED | Private company limited by shares | Live |
| AP's UNION LIMITED | Private company limited by shares | Dissolved |
| UNION BRIGHT INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNION (ASIA) LIMITED | Private company limited by shares | Live |
| UNION TREND LIMITED | Private company limited by shares | Live |
| NINGBO UNITED MOTOR CO., LIMITED | Private company limited by shares | Live |
| VINE MATE UNIVERSAL RESOURCES LIMITED | Private company limited by shares | Live |
| HK HONGDOU UNDERWEAR LIMITED | Private company limited by shares | Live |
| WISE UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNITED-DESIGNERS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| 22nd Century Universal Investment Company Limited | Private company limited by shares | Dissolved |
| UNITED-HOBBY TECH CO., LIMITED | Private company limited by shares | Dissolved |
| UNIGOLD ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNIGOLD INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| YOGA UNION ASIA-PACIFIC CO., LIMITED | Private company limited by shares | Dissolved |
| UNITED CREATIVE LIMITED | Private company limited by shares | Dissolved |