| CHAT UNION SICON HONG KONG COMPANY LIMITED | Private company limited by shares | Live |
| GLORY UNION CORPORATION LIMITED | Private company limited by shares | Live |
| UNION MEGA LIMITED | Private company limited by shares | Dissolved |
| TAIWAN LVGU UNIFIED GROUP WINE-MAKING LIMITED | Private company limited by shares | Dissolved |
| UNION PROFIT LIMITED | Private company limited by shares | Live |
| SILVER UNION LIMITED | Private company limited by shares | Live |
| UNION MARK INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| SKYTRADE UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ASSOCIATION OF WORLD UNION FUND LIMITED | Private company limited by shares | Live |
| UNION WISDOM INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Live |
| JD IMT Universe Trading Company Limited | Private company limited by shares | Dissolved |
| UNIK COMPANY LIMITED | Private company limited by shares | Live |
| ADVANCED UNICOM LIMITED | Private company limited by shares | Dissolved |
| Uni-Health Company Limited | Private company limited by shares | Live |
| UNIVERSAL RETAIL PHARMACY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSO (CHINA) HOLDING LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Union International Trading Limited | Private company limited by shares | Live |
| UNIVERSAL E-COMMERCE CO., LIMITED | Private company limited by shares | Live |
| Uniteki Corporation Limited | Private company limited by shares | Live |
| Intelligence Union (HKG) Consulting Co., Limited | Private company limited by shares | Live |
| WORLD UNION FORTUNE CLUB CO., LIMITED | Private company limited by shares | Live |
| UNIPRO TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Mali Universal Technology Co. Limited | Private company limited by shares | Dissolved |
| KOREA BT UNUSUAL SHOES & CLOTHING LIMITED | Private company limited by shares | Live |
| UNITED BRIGHTEN LIMITED | Private company limited by shares | Live |
| UNIVER ASIA LIMITED | Private company limited by shares | Live |
| FIRST UNION INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Live |
| UNIQUE TOP LIMITED | Private company limited by shares | Live |
| GRAND UNION CORPORATION LIMITED | Private company limited by shares | Live |
| EAST ENTERPRISER UNION GROUP LIMITED | Private company limited by shares | Live |
| UNITECH SOLUTIONS LIMITED | Private company limited by shares | Live |
| GLOBAL BRAND AMBASSADOR UNION ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| UNION FIDELITY INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION RICH INVESTMENT LIMITED | Private company limited by shares | Live |
| VICTORY UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNION FIDELITY HOLDINGS LIMITED | Private company limited by shares | Live |
| China Union Iron And Steel Co., Limited | Private company limited by shares | Dissolved |
| FRIENDS OF UNIVERSITY OF WARWICK IN HONG KONG LIMITED -THE- | Company limited by guarantee | Live |
| United Capital Solutions Limited | Private company limited by shares | Live |
| UNION WAY CORPORATION LIMITED | Private company limited by shares | Live |
| UNITED ASIA PRECIOUS METALS ASSOCIATION CO., LIMITED | Private company limited by shares | Live |
| UNION RISING INTERNATIONAL LIMITED | Private company limited by shares | Live |
| DMOSS (HK) UNION CO., LIMITED | Private company limited by shares | Live |
| UNIQUE PRO LIMITED | Private company limited by shares | Live |
| Talent Union (Hong Kong) Limited | Private company limited by shares | Live Commenced dormancy on 26-Nov-2013 |
| UNITECH DENTAL LIMITED | Private company limited by shares | Live |
| T&J GOLD UNITED PTY LIMITED | Private company limited by shares | Dissolved |
| CHN-LOGISTICS UNION (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| UNITED FORICH LIMITED | Private company limited by shares | Live |
| JOINT UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION TREASURE TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION FIDELITY ENGINEERING LIMITED | Private company limited by shares | Live |
| MAGIFIT UNDERWEAR COMPANY LIMITED | Private company limited by shares | Live |
| UNITED ELITER GROUP LIMITED | Private company limited by shares | Live |
| UNION METAL GROUP LIMITED | Private company limited by shares | Live |
| CHINA UNION BUSINESS COLLEGE LIMITED | Private company limited by shares | Dissolved |
| UNION SKY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ASIAN UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| SINO CONFUCIAN ENTREPRENEURS UNION LIMITED | Private company limited by shares | Live |
| ON PAR UNION LIMITED | Private company limited by shares | Live |
| UNION FINE LIMITED | Private company limited by shares | Live |
| Oriental Union International (Hong Kong) Limited | Private company limited by shares | Live |
| UNISON PROJECTS INTERNATIONAL LIMITED | Private company limited by shares | Live |
| TSINGHUA UNIVERSITY GROUP LIMITED | Private company limited by shares | Live |
| UNION TOYS LIMITED | Private company limited by shares | Live |
| UNION POWER CONSULTANTS LIMITED | Private company limited by shares | Live |
| UNION CONTROL CORPORATION LIMITED | Private company limited by shares | Live |
| NEW UNION LOGISTICS LIMITED | Private company limited by shares | Live |
| ELEVATED UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION WAY EXHIBITION SERVICES LIMITED | Private company limited by shares | Live |
| CHINA UNION INDUSTRY INVESTMENT GROUP LIMITED | Private company limited by shares | Dissolved |
| CHINA INTERNATIONAL NEWS UNITED PRESS GROUP LIMITED | Private company limited by shares | Live |
| WELL UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITOOLS ASIA PACIFIC LIMITED | Private company limited by shares | Live |
| Unitech Trading Company Limited | Private company limited by shares | Dissolved |
| Universal Luxury Group Limited | Private company limited by shares | Live |
| UNIRICH INVESTMENTS LIMITED | Private company limited by shares | Live |
| KENLAND UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| Unearby Limited | Private company limited by shares | Live |
| PACIFIC UNION TRADING INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Underground Creative Limited | Private company limited by shares | Live |
| Top Union International Investment Holdings Limited | Private company limited by shares | Live |
| MACROVISION UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNIPRO (CHINA) LIMITED | Private company limited by shares | Dissolved |
| Universal Time Company Limited | Private company limited by shares | Dissolved |
| SOUTH UNION FOOD COMPANY LIMITED | Private company limited by shares | Live |
| UNION RISER COMPANY LIMITED | Private company limited by shares | Live |
| Unity Business Limited | Private company limited by shares | Live |
| HONG KONG TONG SAN COMMERCIAL UNION COMPANY LIMITED | Private company limited by shares | Live |
| GLOBAL LOVE CONNECT LOVE UNION LIMITED | Private company limited by shares | Live |
| State Union Assets Management Co., Limited | Private company limited by shares | Live |
| UNION MEGA SHIPPING LIMITED | Private company limited by shares | Live |
| UNION BRAND LIMITED | Private company limited by shares | Live |
| UNION PROSPECT LIMITED | Private company limited by shares | Live |
| Fuzhou Uniseason Co., Limited | Private company limited by shares | Live |
| UNION MACHINERY CO., LIMITED | Private company limited by shares | Live |
| UNIVERSE HONG KONG INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED CYBER HOLDING LIMITED | Private company limited by shares | Live |
| Union Street Trading Company Limited | Private company limited by shares | Live |
| UNION EMPIRE KNITTING LIMITED | Private company limited by shares | Live |