| UNIX COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOUL'S UNION APPLIANCES LIMITED | Private company limited by shares | Dissolved |
| UNILINK JEWELS LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION PAPER FACTORY LIMITED | Private company limited by shares | Dissolved |
| UNIONWEST LIMITED | Private company limited by shares | Live |
| UNI-LEADER ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNITED COMPUTER SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| UN-LONG & TUEN-MUN NEWSMEN'S ASSOCIATION LIMITED | Company limited by guarantee | Dissolved |
| UNION TRANSPORT PUBLIC LIGHT BUS ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| UNI-LEADER INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNIGOH LIMITED | Private company limited by shares | Dissolved |
| UNIMET WAREHOUSING LIMITED | Private company limited by shares | Dissolved |
| UNITED TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| H. K. & KOWLOON KNITTING PROCESSING INDUSTRY UNITED ASSOCIATION LIMITED | Company limited by guarantee | Dissolved |
| GREAT UNION GARMENT FACTORY LIMITED | Private company limited by shares | Dissolved |
| GRAND UNIVERSE TRADING COMPANY LIMITED | Private company limited by shares | Live |
| UNIBORN DIE CASTING MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| UNDERWRITING & INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNI-MEDICAL, LIMITED | Private company limited by shares | Dissolved |
| UNPRECEDENTED ACHIEVEMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSEAS LIMITED | Private company limited by shares | Dissolved |
| MAI TONG UNITED COMPANY LIMITED | Private company limited by shares | Live |
| UNIVERSAL ELECTRONICS FACTORY ASSOCIATION LIMITED | Company limited by guarantee | Dissolved |
| UNION STEEL FURNITURE COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHESON UNION (1978) LIMITED | Private company limited by shares | Dissolved |
| WEST UNION INDUSTRIALS LIMITED | Private company limited by shares | Dissolved |
| UNISOUND LIMITED | Private company limited by shares | Dissolved |
| UNICON SCIENTIFIC COMPANY LIMITED | Private company limited by shares | Live |
| TELSTARRETT UNIVERSAL IMPEX LIMITED | Private company limited by shares | Dissolved |
| UNION FLOURISHER LIMITED | Private company limited by shares | Dissolved |
| UNITANG COMPANY, LIMITED | Private company limited by shares | Live |
| UNIPHO LAB LIMITED | Private company limited by shares | Dissolved |
| TIS UNDERWRITERS LIMITED | Private company limited by shares | Dissolved |
| UNION VENEERS (ASIA) LIMITED | Private company limited by shares | Dissolved |
| VICTORY UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL DATA SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| UNICOM FINE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNIWISE COMPANY LIMITED | Private company limited by shares | Dissolved |
| China Units Enterprises Limited | Private company limited by shares | Dissolved |
| UNITY INCORPORATED COMPANY LIMITED | Private company limited by shares | Dissolved |
| U.N.I. ADVERTISING, LIMITED | Private company limited by shares | Dissolved |
| SINCERE'S UNDERWEAR COMPANY LIMITED | Private company limited by shares | Dissolved |
| COLMUK UNIVERSAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL SPORTS GOODS MANUFACTURER LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION PROPERTY MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| UNITEERS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION OPTICAL ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNIAMCO & COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNICOM INVESTIGATION LIMITED | Private company limited by shares | Dissolved |
| UNITED FUR ENTERPRISES COMPANY LIMITED | Private company limited by shares | Dissolved |
| WELL UNITED LIMITED | Private company limited by shares | Live |
| UNITAC TRAVELLING SUPPLIES COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED CAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| SECURITY PROTECTION UNITS LIMITED | Private company limited by shares | Dissolved |
| MAY UNION PRINTING PRODUCT COMPANY LIMITED | Private company limited by shares | Dissolved |
| HUA JUNE UNITED INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITECH INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNISON TIMBER CO. LIMITED | Private company limited by shares | Dissolved |
| UNION STRONG PRODUCTION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNION LOFTHILL LIMITED | Private company limited by shares | Dissolved |
| TRANS UNION LEASING (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNITED STAR ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNITED NAME ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| WAH KIU UNITED ADVERTISING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION'S STRENGTH LIMITED | Private company limited by shares | Dissolved |
| UNITS PROPERTIES LIMITED | Private company limited by shares | Live |
| UNION DIAMOND COMPANY LIMITED | Private company limited by shares | Dissolved |
| C.N.E.C. UNION CHURCH LIMITED | Company limited by guarantee | Live |
| UNITED PACIFIC ELECTRONIC LIMITED | Private company limited by shares | Dissolved |
| UNITA ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNCLE SIX ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION EQUIPMENT COMPANY LIMITED | Private company limited by shares | Live |
| UNIMODAL LIMITED | Private company limited by shares | Dissolved |
| UNITED CONSORTIUM LIMITED | Private company limited by shares | Dissolved |
| WING TAT UNIVERSAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITY PUBLIC RELATIONS LIMITED | Private company limited by shares | Dissolved |
| UNIDESIGN LIMITED | Private company limited by shares | Dissolved |
| UNION HIDES INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| GRAND DRAGON UNIVERSAL SALES COMPANY, LIMITED | Private company limited by shares | Dissolved |
| BEXLEY UNDERWRITING AGENTS LIMITED | Private company limited by shares | Dissolved |
| UNITRANS TRADING LIMITED | Private company limited by shares | Dissolved |
| UNITED CONCORD ENTERPRISE COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNCLE JOE'S ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNANIMOUS COMPANY LIMITED | Private company limited by shares | Dissolved |
| KWING'S UNION LIMITED | Private company limited by shares | Live |
| UNITIME ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNICHU LIMITED | Private company limited by shares | Dissolved |
| UNIFAST INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| CANADIAN UNIVERSITY ASSOCIATION (HONG KONG) LIMITED | Company limited by guarantee | Live |
| UNIPROSPER LIMITED | Private company limited by shares | Dissolved |
| UNIWELL INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| VINCENT UNION (INTERNATIONAL) LIMITED | Private company limited by shares | Dissolved |
| UNBEATABLE COMPANY LIMITED | Private company limited by shares | Dissolved |
| STARS UNITED TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| DRAGONS UNITED LIMITED | Private company limited by shares | Live |
| UNITY ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNI-PRO MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL SUPERMARKET LIMITED | Private company limited by shares | Live |
| UNDERWOOD LIMITED | Private company limited by shares | Dissolved |
| UNISON SEA LAND SERVICES LIMITED | Private company limited by shares | Live |