| MARK UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNIVERSAL MINES OPERATING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION BANGKOK TRADER (H.K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNISHINE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| GOOD VIEW (UNION) CONSTRUCTION COMPANY, LIMITED | Private company limited by shares | Dissolved |
| UNIPHONE COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNI-FAREAST CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNITED PROSPEROUS TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| MODERN UNIVERSAL MERCHANDISE LIMITED | Private company limited by shares | Dissolved |
| UNITED TOURIST TRANSPORT COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNISCOPE LIMITED | Private company limited by shares | Dissolved |
| SEA UNION SPORTS ASSOCIATION LIMITED | Company limited by guarantee | Live |
| UNION ENERGY INDUSTRIES LIMITED | Private company limited by shares | Live |
| KAI UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION OCEAN GARMENT FACTORY LIMITED | Private company limited by shares | Live |
| KAI UNION SHIPPING (H.K.) LIMITED | Private company limited by shares | Dissolved |
| MISS UNIVERSE 1976 LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL RESTAURANT (KOWLOON) COMPANY LIMITED | Private company limited by shares | Dissolved |
| KAI UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNITOIL LIMITED | Private company limited by shares | Dissolved |
| UNION FOOTWEAR MANUFACTORY, LIMITED | Private company limited by shares | Dissolved |
| GOLDFIELD UNITED LIMITED | Private company limited by shares | Dissolved |
| UNITED CREATRON LIMITED | Private company limited by shares | Dissolved |
| MING TAT UNION FACTORY LIMITED | Private company limited by shares | Dissolved |
| UNIGLAZE LIMITED | Private company limited by shares | Dissolved |
| UNION WAI FAT METAL & PLASTIC FACTORY LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION GENERAL & MOTOR INSURANCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MARBLE LIMITED | Private company limited by shares | Dissolved |
| HONG KONG YU NAN COMMERCIAL UNION ASSOCIATION LIMITED | Company limited by guarantee | Live |
| UNITED LABORATORIES, LIMITED -THE- | Private company limited by shares | Live |
| UNICAT JEAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIFORD COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION THREAD FACTORY, LIMITED | Private company limited by shares | Dissolved |
| UNI-PACIFIC CONSTRUCTION COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITRADE REALTY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG UNION PHOTOGRAPHIC CONFEDERATION LIMITED | Company limited by guarantee | Dissolved |
| HONG KONG DOCTORS UNION LIMITED | Company limited by guarantee | Dissolved |
| UNISON ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNITED PROGRESSIVE TRADING COMPANY LIMITED | Private company limited by shares | Live |
| UNITED INTERFLOW LANGUAGE CENTRE LIMITED | Private company limited by shares | Dissolved |
| UNICON SYSTEM (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL TIMBER LIMITED | Private company limited by shares | Dissolved |
| UNION FRATERNITY CONSTRUCTIONS COMPANY LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION CONTAINER CARRIERS LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION CONTAINER TRANSPORTS LIMITED | Private company limited by shares | Dissolved |
| UNITY HOUSEWARE LIMITED | Private company limited by shares | Dissolved |
| UNITED SIX LIMITED | Private company limited by shares | Live |
| UNION ARTS PAPER PRODUCTS FACTORY LIMITED | Private company limited by shares | Dissolved |
| GASON UNITED COMPANY LIMITED | Private company limited by shares | Dissolved |
| PACKAGED REFRIGERATION UNITS LIMITED | Private company limited by shares | Dissolved |
| UNITY SEAFOODS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIFAT RATTAN LIMITED | Private company limited by shares | Dissolved |
| KAYVEE UNITED LIMITED | Private company limited by shares | Live |
| UNITED FRUIT COMPANY LIMITED | Private company limited by shares | Live |
| UNITOWN LIMITED | Private company limited by shares | Dissolved |
| UNION SUCCESS COMPANY LIMITED | Private company limited by shares | Dissolved |
| BSB UNION TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| OVERSEAS UNION FACILITIES (H.K.) LIMITED | Private company limited by shares | Dissolved |
| STRAITS UNION (S.E.A.) LIMITED | Private company limited by shares | Live |
| PAN UNION COMPANY, LIMITED | Private company limited by shares | Live |
| UNIQUE ART COMPANY LIMITED | Private company limited by shares | Live |
| UNIGLOBE LIMITED | Private company limited by shares | Live |
| UNIVERSAL BUDDHISM ASSOCIATION LIMITED | Company limited by guarantee | Dissolved |
| THAMES UNION INSURANCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNI-AD ADVERTISING, LIMITED | Private company limited by shares | Dissolved |
| UNITED WONDER COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL UNITARIAN CHURCH, LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION COLOURING FACTORY LIMITED | Private company limited by shares | Dissolved |
| UNIND INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNITED ELECTRIC TRADING COMPANY LIMITED | Private company limited by shares | Live |
| UNITED CORDIALITY (UNICORD) LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MANPOWER LIMITED | Private company limited by shares | Dissolved |
| CHOI LEE FAT KUNG-FU UNION LIMITED | Company limited by guarantee | Dissolved |
| UNION-TEX NOVELTIES COMPANY, LIMITED | Private company limited by shares | Dissolved |
| UNITEK ENGINEERS LIMITED | Private company limited by shares | Live |
| 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 |
| 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 |
| UNI-MEDICAL, 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 |