| UNION CAPITAL INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION GLOBAL LIMITED | Private company limited by shares | Dissolved |
| FINE UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNIQUE TOP SHIPPING LIMITED | Private company limited by shares | Dissolved |
| UNIQUE PROPERTIES LIMITED | Private company limited by shares | Live |
| UNIVERSAL WOOD INDUSTRY GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION SHEEN HONG KONG LIMITED | Private company limited by shares | Dissolved |
| UNION ASIA INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION CROSS INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION (HK) TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION DRAGON APPLIANCES LIMITED | Private company limited by shares | Dissolved |
| UNION MARINE SEAFOOD TRADING LIMITED | Private company limited by shares | Dissolved |
| HONG KONG UNION VISION CO., LIMITED | Private company limited by shares | Live |
| JADE UNION LIMITED | Private company limited by shares | Dissolved |
| POWERFUL UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNIPARRY EDUCATION INVESTMENT CO., LIMITED | Private company limited by shares | Dissolved |
| UNION PLASTICS & CHEMICAL (HK) LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE ASIA LIMITED | Private company limited by shares | Live |
| UNION KEY HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE DIE-CASTING METAL MANUFACTORY COMPANY LIMITED | Private company limited by shares | Live |
| UNIQCLO LIMITED | Private company limited by shares | Dissolved |
| UNITED WORLD CHINESE INVESTMENT FUND HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNITED RESOURCES GROUP LIMITED | Private company limited by shares | Live |
| UNIPLUS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION HONEST INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| JET UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED TEAM INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED TEAM TRADING LIMITED | Private company limited by shares | Live |
| EXCELLENT UNION ENTERPRISE LIMITED | Private company limited by shares | Live |
| UNION TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| MERIT UNION LIMITED | Private company limited by shares | Dissolved |
| UNIMAG ELECTRONICS CO., LIMITED | Private company limited by shares | Dissolved |
| UNION STAR INTERNATIONAL LIMITED | Private company limited by shares | Live |
| PREMIUM UNION LIMITED | Private company limited by shares | Dissolved |
| UNION FIELD DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| ASIA UNIVERSAL INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIX INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNICOM ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL PRODUCTION AND TRADE CO. LIMITED | Private company limited by shares | Live |
| GOLD IDEA UNIVERSAL LIMITED | Private company limited by shares | Live |
| MIND UNIVERSE (HK) LIMITED | Private company limited by shares | Live |
| SANHAO UNION INDUSTRY LIMITED | Private company limited by shares | Live |
| FRANCE MARLBAORU UNION ASSET LIMITED | Private company limited by shares | Dissolved |
| HAONYI UNION ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| EMERALD UNITED OIL COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION INDUSTRIES (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNICOBA (HK) LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL TRAINING & CONSULTANCY LIMITED | Private company limited by shares | Live |
| FINE UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ENGINEERING LIMITED | Private company limited by shares | Live |
| ISLAND UNION LIMITED | Private company limited by shares | Live |
| UNION-LINK INTERNATIONAL TOBACCO (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SUCCESS UNIVERSE GROUP MANAGEMENT LIMITED | Private company limited by shares | Live |
| UNITECH CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION DRAGON TRADING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE QUAKEPROOF ENGINEERING SYSTEM DEV. LIMITED | Private company limited by shares | Dissolved |
| UNION LINKAGE LIMITED | Private company limited by shares | Live |
| TALENT UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION VANTAGE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION GENESIS LIMITED | Private company limited by shares | Dissolved |
| CROWN UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL SKY LIMITED | Private company limited by shares | Live |
| UNIVERSAL HERITAGE GROUP, LIMITED | Private company limited by shares | Dissolved |
| UNEX ENTERPRISE LIMITED | Private company limited by shares | Live |
| UNITED HERITAGE GROUP, LIMITED | Private company limited by shares | Dissolved |
| EXCELLENCE UNION GARMENT COMPANY LIMITED | Private company limited by shares | Live |
| FRIENDS OF SHANTOU UNIVERSITY LIMITED | Company limited by guarantee | Live |
| UNION WISE LIMITED | Private company limited by shares | Dissolved |
| ST UNITED STUDIO LIMITED | Private company limited by shares | Live |
| UNION POWER LIMITED | Private company limited by shares | Live |
| NEW UNION INTERNATIONAL (H.K.) LIMITED | Private company limited by shares | Live |
| NEW UNION CHINA COMPANY LIMITED | Private company limited by shares | Dissolved |
| STAR UNITED LIMITED | Private company limited by shares | Dissolved |
| UNITED SKY LIMITED | Private company limited by shares | Live |
| ICE UNIVERSAL LIMITED | Private company limited by shares | Live |
| SILVERING UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNION ELITE INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION (INTERNATIONAL) ENGINEERING TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| TIN MEN UNITED COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNISMART HONG KONG LIMITED | Private company limited by shares | Dissolved |
| UNIWAY INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| HONG KONG SINO-KOREA UNION DIGITAL LIMITED | Private company limited by shares | Dissolved |
| UNION PROPERTY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION WINNER LIMITED | Private company limited by shares | Live |
| SUPER UNION GROUP COMPANY LIMITED | Private company limited by shares | Live |
| UNION PARK DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNITED ZONE LIMITED | Private company limited by shares | Dissolved |
| UNIQUE TOP INVESTMENT LIMITED | Private company limited by shares | Live |
| OLIVET UNIVERSITY LIMITED | Company limited by guarantee | Live |
| USA GM.VW UNION PETROLEUM CO., LIMITED | Private company limited by shares | Dissolved |
| UNION CREDIT ADVISORY LIMITED | Private company limited by shares | Dissolved |
| UNION CREATION CHEMICAL LIMITED | Private company limited by shares | Dissolved |
| Unispo Limited | Private company limited by shares | Live |
| FORTUNATE UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MARITIME BUREAU COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG UNION APPLE CLOTHING LIMITED | Private company limited by shares | Dissolved |
| UNITED GROUP STOCKS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION LOGISTICS (CHINA) LIMITED | Private company limited by shares | Live Commenced dormancy on 04-May-2011 |
| SUN UNITED LIMITED | Private company limited by shares | Live |
| UNIVERSE SCIENCE & TECHNOLOGY INDUSTRIAL DEV. LIMITED | Private company limited by shares | Dissolved |