| UNION SECURITY LIMITED | Private company limited by shares | Dissolved |
| UNION OVERSEA INVESTMENT (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| INTERNATIONAL UNION INSURANCE SERVICES LIMITED | Private company limited by shares | Live |
| MAN HING UNION ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| GIANT UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| BROADWORLD UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION FRIEND INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION SHEEN DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION ASIA HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| GIANT UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| GIANT UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| BRIGHT EAGLE (UNION) LIMITED | Private company limited by shares | Live |
| UNION FAITH HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION SERVICES LIMITED | Private company limited by shares | Dissolved |
| UNION LOMBARD FINANCIAL MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| LEFT UNION (H.K.) METAL & ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION PLATE SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| UNION PRINTING (H.K.) LIMITED | Private company limited by shares | Dissolved |
| ETERNAL UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| ETERNAL UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| ETERNAL UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| ETERNAL UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ETERNAL UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| ETERNAL UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| DICKSON UNION TRANSPORTATION CO. LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION SHIPPING LIMITED | Private company limited by shares | Dissolved |
| UNION SHINE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION FIRST INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION SOUND INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNIONBRIDGE CABLEPLUS COMPANY LIMITED | Private company limited by shares | Live |
| UNION (NEWSPAPER & MAGAZINE) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION-ASHIYA SANJOBAG LIMITED | Private company limited by shares | Dissolved |
| NEW UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| CULTURE UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION NATION LIMITED | Private company limited by shares | Dissolved |
| UNION KIND INTERNATIONAL LIMITED | Private company limited by shares | Live Commenced dormancy on 21-Mar-1997 |
| UNION LANE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION ASIA INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION FORTUNE TRADING LIMITED | Private company limited by shares | Dissolved |
| SMART UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| TOP UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| CENTRAL UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| GOLD UNION CONSTRUCTION LIMITED | Private company limited by shares | Dissolved |
| FRIEND UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| FAR EAST UNION LIMITED | Private company limited by shares | Dissolved |
| METRO UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION CITY INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNION FONT LIMITED | Private company limited by shares | Dissolved |
| HARVEST UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION ASSETS LIMITED | Private company limited by shares | Dissolved |
| UNION LINK WORLDWIDE COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION SENSE LIMITED | Private company limited by shares | Dissolved |
| UNION CHANCE DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION CROWN INTERNATIONAL SHIPPING LIMITED | Private company limited by shares | Dissolved |
| UNION CONCORD INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION KING INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION SHEEN INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| TOP UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION DRAGON INVESTMENT (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNION GRAND DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION SHINE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION KING LIMITED | Private company limited by shares | Live |
| FORTUNE UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| DATA UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNION FRIEND LIMITED | Private company limited by shares | Dissolved |
| UNION MAX LIMITED | Private company limited by shares | Dissolved |
| UNION SILVER LIMITED | Private company limited by shares | Dissolved |
| UNION GLOBE LIMITED | Private company limited by shares | Dissolved |
| AROMA UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION APEX INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| IDEAL UNION LIMITED | Private company limited by shares | Dissolved |
| DIAMOND UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| TOP UNION ADVERTISING DESIGN COMPANY LIMITED | Private company limited by shares | Dissolved |
| TOP UNION ASIA LIMITED | Private company limited by shares | Dissolved |
| SOUTH UNION CAPITAL (HK) LIMITED | Private company limited by shares | Live |
| PEARL UNION LIMITED | Private company limited by shares | Dissolved |
| BLOOMING UNION CO., LIMITED | Private company limited by shares | Dissolved |
| CAPITAL UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| DIAMOND UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION FAITH INSURANCE CONSULTANCY LIMITED | Private company limited by shares | Dissolved |
| WISE UNION INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| STANDARD UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| STONE UNION LIMITED | Private company limited by shares | Live |
| UNION KEEN INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION CENTRE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION CHARTER INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION RIVER LIMITED | Private company limited by shares | Dissolved |
| UNION CHARTER LIMITED | Private company limited by shares | Live |
| UNION MILLION LIMITED | Private company limited by shares | Dissolved |
| UNION TONE LIMITED | Private company limited by shares | Dissolved |
| UNION CAPITAL LIMITED | Private company limited by shares | Dissolved |
| UNION SOUTH LIMITED | Private company limited by shares | Dissolved |
| UNIONCOMM INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| TAIWANESE UNION ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| VICTORY UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION TOP HOLDINGS LIMITED | Private company limited by shares | Live |
| KING UNION PROPERTIES INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION BASE INVESTMENT LIMITED | Private company limited by shares | Dissolved |