| UpMug Limited | Private company limited by shares | Live |
| UPMUSIC LIMITED | Private company limited by shares | Live |
| UPNE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UPNEXT COMPANY LIMITED | Private company limited by shares | Dissolved |
| UPNEY COMPANY LIMITED | Private company limited by shares | Dissolved |
| UPNMED LIMITED | Private company limited by shares | Live |
| HK UPNMED TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| UPNORTH LIMITED | Private company limited by shares | Dissolved |
| Upnova Technology Limited | Private company limited by shares | Live |
| HONGKONG UPNOW GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| U-PO International Limited | Private company limited by shares | Live |
| UpOcean (ASIA) Company Limited | | Live |
| UPOD LIMITED | Private company limited by shares | Live |
| U-POINT LIMITED | Private company limited by shares | Dissolved |
| U-POINT INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| U-POINT INVESTMENT LIMITED | Private company limited by shares | Live |
| uPoint Workspaces Limited | Private company limited by shares | Live |
| UPOLabs Innovation Limited | Private company limited by shares | Dissolved |
| U-POLEMAG INDUSTRY LIMITED | Private company limited by shares | Live |
| UPOLEY ENTERPRISES COMPANY LIMITED | Private company limited by shares | Live |
| UPON LIMITED | Private company limited by shares | Live |
| MAX UPON LIMITED | Private company limited by shares | Live |
| Upon Sky Limited | Private company limited by shares | Live |
| SPEED UPON LIMITED | Private company limited by shares | Live |
| STAR UPON LIMITED | Private company limited by shares | Dissolved |
| UPONCOMM TECHNOLOGIES CO., LIMITED | Private company limited by shares | Live |
| Upone Limited | | Live |
| HONGKONG UP-ONE INTERNATIONAL TRADE CO., LIMITED | Private company limited by shares | Live |
| Uponor Hong Kong Limited | Private company limited by shares | Live |
| UPONTIME ENTERPRISES LIMITED | Private company limited by shares | Live |
| UPONTYNE COMPANY LIMITED | Private company limited by shares | Live |
| UPONWAY GLOBAL LIMITED | | Live |
| upoon industrial Co., Limited | Private company limited by shares | Live |
| U-POPULAR COMPANY LIMITED | Private company limited by shares | Dissolved |
| UPORT LIMITED | Private company limited by shares | Dissolved |
| UPORTS LIMITED | Private company limited by shares | Dissolved |
| UPOS LIMITED | Private company limited by shares | Live |
| HK UPOS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| uPost2 Limited | Private company limited by shares | Live |
| Upower Limited | Private company limited by shares | Live |
| UPOWER LIMITED | Private company limited by shares | Live |
| Upower.com.hk Company Limited | Private company limited by shares | Live |
| UPPACASE LIMITED | Private company limited by shares | Live |
| UPPAL LIMITED | Private company limited by shares | Live |
| UPPAL INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| UPPARK LIMITED | Private company limited by shares | Dissolved |
| UPPARTY COMPANY LIMITED | Private company limited by shares | Live Commenced dormancy on 17-Jun-2013 |
| UPPAS LIMITED | Private company limited by shares | Dissolved |
| Uppen Garden Limited | Private company limited by shares | Live |
| UPPER SKY COMPANY LIMITED | Private company limited by shares | Dissolved |
| UPPER SUN LIMITED | Private company limited by shares | Dissolved |
| UPPER KEY LIMITED | Private company limited by shares | Dissolved |
| UPPER COMPANY LIMITED | Private company limited by shares | Live |
| UPPER TOP LIMITED | Private company limited by shares | Dissolved |
| UPPER WIN LIMITED | Private company limited by shares | Dissolved |
| UPPER TOP LIMITED | Private company limited by shares | Dissolved |
| Upper Art Limited | Private company limited by shares | Live |
| UPPER LED LIMITED | Private company limited by shares | Live |
| UPPER JOY LIMITED | Private company limited by shares | Live |
| Upper Tek Limited | Private company limited by shares | Live |
| UPPER AIM LIMITED | Private company limited by shares | Live |
| UPPER ACE LIMITED | Private company limited by shares | Live |
| UPPER SKY LIMITED | Private company limited by shares | Live Commenced dormancy on 09-Oct-2015 |
| Upper One Company Limited | Private company limited by shares | Live |
| UPPER ERA LIMITED | Private company limited by shares | Live |
| UPPER MIX LIMITED | Private company limited by shares | Live |
| UPPER ERA LIMITED | Private company limited by shares | Live |
| UPPER SEA LIMITED | Private company limited by shares | Live |
| Upper 4D Co Limited | | Live |
| Upper Tea Company Limited | | Live |
| UPPER AGENCY LIMITED | Private company limited by shares | Live |
| UPPER ALLIANCE LIMITED | Private company limited by shares | Live |
| HK UPPER KITCHEN & SANITARY APPLIANCES LIMITED | Private company limited by shares | Dissolved |
| UPPER LEVEL ARCHITECTURE LIMITED | Private company limited by shares | Dissolved |
| UPPER ASCENT LIMITED | Private company limited by shares | Live |
| UPPER ART ASIA LIMITED | Private company limited by shares | Live |
| UPPER ASSET LIMITED | Private company limited by shares | Dissolved |
| UPPER ASSET LIMITED | Private company limited by shares | Live |
| UPPER BASIC LIMITED | Private company limited by shares | Live |
| UPPER BENEFIT LIMITED | Private company limited by shares | Live |
| Upper Benefit Employment Agency Limited | Private company limited by shares | Live |
| Upper Pacific Bioscience Limited | Private company limited by shares | Live |
| UPPER BOND LIMITED | Private company limited by shares | Dissolved |
| UPPER BRAND CONSULTING LIMITED | Private company limited by shares | Live |
| UPPER BRIGHT LIMITED | Private company limited by shares | Live |
| UPPER BROAD LIMITED | Private company limited by shares | Dissolved |
| UPPER BUSINESS LIMITED | Private company limited by shares | Live |
| Upper Upper Cable LIMITED | | Live |
| UPPER CAPITAL LIMITED | Private company limited by shares | Live |
| Upper Casa Limited | Private company limited by shares | Live |
| UPPER CASTLE LIMITED | Private company limited by shares | Live |
| UPPER CHAIN LIMITED | Private company limited by shares | Live |
| UPPER CHAMP LIMITED | Private company limited by shares | Live |
| UPPER CHAMPION LIMITED | | Live |
| UPPER CHANCE LIMITED | Private company limited by shares | Live |
| UPPER CHANCE GROUP LIMITED | Private company limited by shares | Live |
| UPPER CHARM LIMITED | Private company limited by shares | Live |
| UPPER CHEER LIMITED | Private company limited by shares | Live |
| UPPER CHINA LIMITED | Private company limited by shares | Dissolved |
| UPPER CHINA LIMITED | Private company limited by shares | Live |