| United Medical Group HK Limited | Private company limited by shares | Live |
| UNITED SUCCESS MEDICAL GROUP LIMITED | Private company limited by shares | Live |
| UNITED HEALTH MEDICAL CENTRE LIMITED | Private company limited by shares | Dissolved |
| MEDICAL UNITED NETWORK LIMITED | Private company limited by shares | Live |
| UNITED ASIA MEDICAL NETWORK COMPANY LIMITED | Private company limited by shares | Live |
| UNITED MEDICAL PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| UNITED MEDICAL SERVICE COMPANY LIMITED | Private company limited by shares | Dissolved |
| United Medical System Limited | Private company limited by shares | Live |
| United Medical Therapy Center Limited | | Live |
| United Healthcare and Medical Treatment Limited -The- | Private company limited by shares | Live |
| SAKURA UNIVERSAL MEDICAL SUPPLY COMPANY LIMITED | Private company limited by shares | Dissolved |
| UPSTREAM MEDICAL LIMITED | Private company limited by shares | Live |
| Uranus Medical Centre Limited | Private company limited by shares | Live |
| UROTECH MEDICAL LIMITED | Private company limited by shares | Live |
| G & L MEDICAL (USA) COMPANY LIMITED | Private company limited by shares | Live |
| Usena Medical Limited | Private company limited by shares | Live |
| uSWOP Medical Limited | Private company limited by shares | Live |
| UTsonic Medical Limited | | Live |
| Medical Valley HK Limited | Private company limited by shares | Live |
| HAPPY VALLEY MEDICAL CENTRE LIMITED | Private company limited by shares | Dissolved |
| CHINA MEDICAL VALLEY LIMITED | Private company limited by shares | Live |
| Medical Valley Holding Co., Limited | Private company limited by shares | Live |
| VAST CARE MEDICAL LIMITED | Private company limited by shares | Live |
| VASTEC MEDICAL LIMITED | Private company limited by shares | Live |
| VCARE MEDICAL CENTRE LIMITED | Private company limited by shares | Dissolved |
| VENCH MEDICAL CO., LIMITED | Private company limited by shares | Live |
| VEPRO MEDICAL CENTRE LIMITED | | Live |
| Verathon Medical (Hong Kong) Limited | Private company limited by shares | Live |
| MASTERMIND VETERINARY AND MEDICAL SERVICE COMPANY LIMITED | Private company limited by shares | Live |
| Veterinary Medical Supply Limited | Private company limited by shares | Live |
| FORE VICTORY MEDICAL LIMITED | Private company limited by shares | Live |
| Dr View Medical Limited | Private company limited by shares | Dissolved |
| DR VIEW MEDICAL LIMITED | Private company limited by shares | Live |
| GRAND VIEW MEDICAL SYSTEM LIMITED | Private company limited by shares | Dissolved |
| VIKIMED MEDICAL & HEALTHCARE LIMITED | Private company limited by shares | Dissolved |
| VINCENT INSPIRED MEDICAL LIMITED | Private company limited by shares | Live |
| Virtue Medical Limited | Private company limited by shares | Live |
| VIRTUS MEDICAL GROUP LIMITED | Private company limited by shares | Live |
| VISION MEDICAL LIMITED | Private company limited by shares | Live |
| GRAND VISION MEDICAL LIMITED | Private company limited by shares | Live |
| Visionary Medical Group Limited | Private company limited by shares | Live |
| Visus Medical Limited | | Live |
| VITALITY MEDICAL LIMITED | Private company limited by shares | Live |
| Viuture Medical Consultancy Limited | Private company limited by shares | Live |
| VivaLink Medical Hong Kong Limited | Private company limited by shares | Live |
| CHUNG CHENG (TAI WAI) MEDICAL LIMITED | | Live |
| WALWELL MEDICAL LIMITED | Private company limited by shares | Live |
| Waterwood Medical Limited | Private company limited by shares | Live |
| Wave Medical Limited | Private company limited by shares | Live |
| WAYO MEDICAL LIMITED | Private company limited by shares | Live |
| TOP WEALTH MEDICAL LIMITED | Private company limited by shares | Dissolved |
| Wecare Medical Company Limited | Private company limited by shares | Live |
| WECARE MEDICAL LIMITED | | Live |
| WECARE MEDICAL CENTRE LIMITED | Private company limited by shares | Dissolved |
| Wecare Medical Supply Limited | Private company limited by shares | Live |
| WEIJIAN MEDICAL COMPANY LIMITED | Private company limited by shares | Live |
| WEIMEIHUI MEDICAL HAIRDRESSING CENTER CO., LIMITED | Private company limited by shares | Live |
| Well Choice Medical Limited | | Live |
| WELL CONSERVE MEDICAL LIMITED | Private company limited by shares | Live |
| Well Onco Medical Limited | Private company limited by shares | Live |
| Keen Well Medical Laboratory and X-Ray Services Limited | Private company limited by shares | Live |
| Wellbeing Fu Kiu Medical Limited | | Live |
| WELLCARE MEDICAL APPLIANCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| WELLCARE MEDICAL CO., LIMITED | Private company limited by shares | Live |
| Wellgo Medical Investment Company Limited | Private company limited by shares | Live |
| Welling Medical Company Limited | Private company limited by shares | Live |
| Wellington Medical Centre Limited | Private company limited by shares | Live |
| WELLMAX MEDICAL CENTRE LIMITED | Private company limited by shares | Dissolved |
| WELLON MEDICAL CENTRE LIMITED | | Live |
| WENK MEDICAL LIMITED | Private company limited by shares | Dissolved |
| WERFEN MEDICAL LIMITED | Private company limited by shares | Dissolved |
| WESTCODE DENTAL MEDICAL CO., LIMITED | Private company limited by shares | Live |
| WESTERN MEDICAL LIMITED | Private company limited by shares | Live |
| WESTERN MEDICAL CENTRE LIMITED | Private company limited by shares | Dissolved |
| WESTERN CHINESE MEDICAL RESEARCH LIMITED | Private company limited by shares | Dissolved |
| Whiterock Medical Limited | Private company limited by shares | Live |
| Windland Medical Center Limited | Private company limited by shares | Live |
| HK Windon Medical Limited | Private company limited by shares | Live |
| Windsor Medical Company Limited | | Live |
| Wing Fat Medical Limited | Private company limited by shares | Live |
| LO WING KEE MEDICAL LIMITED | Private company limited by shares | Live |
| Wing Kin Medical Company Limited | Private company limited by shares | Live |
| WAI WING MEDICAL LIMITED | Private company limited by shares | Live |
| WING YIN MEDICAL BEAUTY LIMITED | Private company limited by shares | Dissolved |
| WING FAI MEDICAL CENTRE LIMITED | Private company limited by shares | Live |
| KWUN WING MEDICAL LIMITED | Private company limited by shares | Live |
| WING TAK MAN LOONG MEDICAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| WING SHUNG MEDICAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| DR. TSE WING YUEN MEDICAL LIMITED | Private company limited by shares | Live |
| WINGATE MEDICAL LIMITED | Private company limited by shares | Live |
| Winlink Medical Limited | Private company limited by shares | Live |
| WINNER MEDICAL (HONG KONG) LIMITED | Private company limited by shares | Live |
| WINNER MEDICAL NETWORKS LIMITED | Private company limited by shares | Live |
| Winsome Medical Limited | Private company limited by shares | Live |
| WINSTON MEDICAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| WIPO MEDICAL COMPANY LIMITED | Private company limited by shares | Live |
| WISDOM MEDICAL LIMITED | Private company limited by shares | Live |
| WISE MEDICAL LIMITED | Private company limited by shares | Live |
| WISE MEDICAL CENTRE LIMITED | Private company limited by shares | Live |
| WISE LEAD MEDICAL COMPANY LIMITED | Private company limited by shares | Live |