| UNION SIZING MILL LIMITED | Private company limited by shares | Dissolved |
| EMIRATES UNION FINANCE LIMITED | Private company limited by shares | Dissolved |
| UNION CREATIVE SHIPPING LIMITED | Private company limited by shares | Dissolved |
| UNION NGOK KEE ELECTRICAL MANUFACTURING LIMITED | Private company limited by shares | Live |
| UNION WAI KEE METAL WORKS FACTORY LIMITED | Private company limited by shares | Dissolved |
| YAN TAK UNION (1974) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION SILK SCREEN PRINTING LIMITED -THE- | Private company limited by shares | Dissolved |
| UNION STATIONERY COMPANY LIMITED | Private company limited by shares | Live |
| GRAND UNION LIFE ASSURANCE LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| UNION SHIPMANAGEMENT COMPANY, LIMITED | Private company limited by shares | Dissolved |
| FOREVER UNION LIMITED | Private company limited by shares | Dissolved |
| UNION GOODRICH IMPORT EXPORT COMPANY LIMITED | Private company limited by shares | Dissolved |
| KWAI UNION PUBLIC LIGHT BUS ASSOCIATION LIMITED | Company limited by guarantee | Live |
| UNION HEAPSON LUGGAGE CO., LIMITED | Private company limited by shares | Dissolved |
| KING'S UNION MARINE LIMITED | Private company limited by shares | Dissolved |
| HONG KONG CANOE UNION LIMITED -THE- | Company limited by guarantee | Live |
| UNION BANGKOK TRADER (H.K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| GOOD VIEW (UNION) CONSTRUCTION COMPANY, 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 |
| KAI UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION FOOTWEAR MANUFACTORY, LIMITED | Private company limited by shares | Dissolved |
| MING TAT UNION FACTORY 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 |
| HONG KONG YU NAN COMMERCIAL UNION ASSOCIATION LIMITED | Company limited by guarantee | Live |
| UNION THREAD FACTORY, 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 |
| 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 |
| UNION ARTS PAPER PRODUCTS FACTORY 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 |
| THAMES UNION INSURANCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION COLOURING FACTORY 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 |
| SOUL'S UNION APPLIANCES 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 |
| UNION TRANSPORT PUBLIC LIGHT BUS ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION GARMENT FACTORY LIMITED | Private company limited by shares | 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 |
| UNION FLOURISHER LIMITED | Private company limited by shares | Dissolved |
| UNION VENEERS (ASIA) LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION PROPERTY MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| UNION OPTICAL ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| MAY UNION PRINTING PRODUCT COMPANY 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 |
| UNION'S STRENGTH LIMITED | Private company limited by shares | Dissolved |
| UNION DIAMOND COMPANY LIMITED | Private company limited by shares | Dissolved |
| C.N.E.C. UNION CHURCH LIMITED | Company limited by guarantee | Live |
| UNION EQUIPMENT COMPANY LIMITED | Private company limited by shares | Live |
| UNION HIDES INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| KWING'S UNION LIMITED | Private company limited by shares | Live |
| VINCENT UNION (INTERNATIONAL) LIMITED | Private company limited by shares | Dissolved |
| N.T. UNION X-RAY & LABORATORY COMPANY LIMITED -THE- | Private company limited by shares | Live |
| UNION KCAWY LIMITED | Private company limited by shares | Dissolved |
| UNION SQUARE PROPERTIES LIMITED | Private company limited by shares | Live |
| UNION DYEING WORKS LIMITED | Private company limited by shares | Live |
| UNION FORT DEVELOPMENT COMPANY, LIMITED | Private company limited by shares | Dissolved |
| TAJIMA UNION EMBROIDERY SERVICE LIMITED | Private company limited by shares | Dissolved |
| UNION WATCH CASE FACTORY INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| ISLAMIC UNION OF HONG KONG -THE- | Company limited by guarantee | Live |
| KING UNION COMPANY, LIMITED | Private company limited by shares | Dissolved |
| H.K.C.P. UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION PROFIT LIMITED | Private company limited by shares | Dissolved |
| MILLION UNION LIMITED | Private company limited by shares | Live |
| UNION TRENOMICS LIMITED | Private company limited by shares | Dissolved |
| MOUNT UNION LIMITED | Private company limited by shares | Dissolved |
| UNION BUILDING MATERIAL SUPPLIES LIMITED | Private company limited by shares | Dissolved |
| UNION PLASTIC FACTORY LIMITED | Private company limited by shares | Live |
| LINK UNION LIMITED | Private company limited by shares | Dissolved |
| UNION WAYS (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION GAIN LIMITED | Private company limited by shares | Dissolved |
| UNION BEST LIMITED | Private company limited by shares | Dissolved |
| RICH UNION LIMITED | Private company limited by shares | Dissolved |
| UNION CENTRE LIMITED | Private company limited by shares | Dissolved |
| UNION MEDICAL CENTRE LIMITED | Private company limited by shares | Live |
| LEAD UNION LIMITED | Private company limited by shares | Dissolved |
| UNION CITY LIMITED | Private company limited by shares | Dissolved |
| YOUNG UNION LIMITED | Private company limited by shares | Live |
| JET UNION TRAVEL AGENCY LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION ORGANIZATION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION BROTHERS FUR LIMITED | Private company limited by shares | Live |
| UNION LUCK ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| OVERSEA CHINESE UNION AGENCY COMPANY LIMITED | Private company limited by shares | Dissolved |