| UBIN LIMITED | Private company limited by shares | Dissolved |
| UbiNeOn Limited | | Live |
| uBingo International Limited | Private company limited by shares | Live |
| UBINS HK LIMITED | Private company limited by shares | Dissolved |
| Ubipos Limited | Private company limited by shares | Live |
| UBIQ FX LIMITED | Private company limited by shares | Dissolved |
| UBIqube Solutions HK Limited | Private company limited by shares | Live |
| HONG KONG UBIQUECOM LIMITED | Private company limited by shares | Dissolved |
| UbiquioHK Limited | | Live |
| Ubiquiti Networks International Limited | Private company limited by shares | Live |
| HongKong Ubiquitious Intelligent Technology Co. Limited | Private company limited by shares | Live |
| UBIQUITOUS LIMITED | Private company limited by shares | Live |
| UBIQUITOUS HOLDING LIMITED | Private company limited by shares | Live |
| Ubiquitous Space Limited | Private company limited by shares | Live |
| UBIQUITY COMPANY LIMITED | Private company limited by shares | Dissolved |
| UBIQUITY LIMITED | Private company limited by shares | Live |
| SKY UBIQUITY LIMITED | Private company limited by shares | Dissolved |
| Ubiquity E-Commerce Co., Limited | | Live |
| Ubiquity Trading Co., Limited | Private company limited by shares | Live |
| Ubiquity Development Limited | | Live |
| Ubiquity Diagnostics Limited | Private company limited by shares | Live |
| Ubiquity Engineering Co., Limited | Private company limited by shares | Live |
| Ubiquity Creative Group Limited | Private company limited by shares | Live |
| Ubiquity Holdings Limited | Private company limited by shares | Live |
| UBIQUITY ILLUMINATIONS DESIGN COMPANY LIMITED | Private company limited by shares | Live |
| UBIQUITY INDUSTRIAL CERAMICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UBIQUITY TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| UBIQUITY TRADING LIMITED | Private company limited by shares | Live |
| UBISOFT LIMITED | Private company limited by shares | Live |
| UbiSolar Technology Limited | | Live |
| UBITECH PTE LIMITED | Private company limited by shares | Dissolved |
| UBITECH LIMITED | Private company limited by shares | Live |
| UBITEQ HK LIMITED | Private company limited by shares | Dissolved |
| UBITEX COMPANY LIMITED | Private company limited by shares | Dissolved |
| UBITEX LIMITED | Private company limited by shares | Live |
| UBITGROUP LIMITED | Private company limited by shares | Live |
| UBITRADE LIMITED | | Live |
| UBITSAI (H.K.) LIMITED | Private company limited by shares | Live |
| UBITUS H.K. LIMITED | Private company limited by shares | Live |
| UBIVOX LIMITED | Private company limited by shares | Live |
| UBIWORKS HOLDING LIMITED | Private company limited by shares | Live |
| Ubix HK Co. Limited | Private company limited by shares | Dissolved |
| Ubix Limited | Private company limited by shares | Live |
| Ubiz Digital Company Limited | | Live |
| UBIZEN LIMITED | Private company limited by shares | Dissolved |
| Ubizense Limited | Private company limited by shares | Live |
| Ubizfloral Limited | Private company limited by shares | Live |
| Ublecore Resource Co., Limited | Private company limited by shares | Live |
| U-BLESS COMPANY LIMITED | Private company limited by shares | Dissolved |
| Ublo Group Limited | Private company limited by shares | Live |
| Ublossom Technology (HK) Co., Limited | Private company limited by shares | Live |
| UBLYS LIMITED | Private company limited by shares | Live |
| U.B.O. (HOLDING) LIMITED | Private company limited by shares | Live |
| UBoat Limited | Private company limited by shares | Live |
| Uboda Trade Co., Limited | Private company limited by shares | Live |
| UBODA Enterprise (HK) Limited | Private company limited by shares | Live |
| U-BON HK TRADING LIMITED | Private company limited by shares | Live |
| U-BOND LIMITED | Private company limited by shares | Live |
| Ubonus Financial Advisory Co., Limited | Private company limited by shares | Live |
| U-BOOMING DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UBoost Energy Co., Limited | | Live |
| U-BOOSTER LIMITED | Private company limited by shares | Live |
| U-BORN COMPANY LIMITED | Private company limited by shares | Dissolved |
| U-BORNE TRANSPORT LIMITED | Private company limited by shares | Dissolved |
| U-BOS GM LIMITED | Private company limited by shares | Live |
| UBOSS LAB LIMITED | Private company limited by shares | Live |
| UBOT INCORPORATED LIMITED | Private company limited by shares | Live |
| UBot Innovation Technology Limited | | Live |
| UBOTIC COMPANY LIMITED | Private company limited by shares | Live |
| UBOTIC INTELLECTUAL PROPERTY COMPANY LIMITED | Private company limited by shares | Live |
| uBox Limited | Private company limited by shares | Live |
| Ubrand Limited | Private company limited by shares | Live |
| U-Branding Group Co., Limited | Private company limited by shares | Live |
| UBRBSIX Holding Limited | Private company limited by shares | Live |
| U-BRIGHT COMPANY LIMITED | Private company limited by shares | Dissolved |
| uBroad Technology (Hongkong) Limited | Private company limited by shares | Live |
| U-Broad Trade Limited | | Live |
| UBRS HK LIMITED | Private company limited by shares | Live |
| UBSHX Investment Holding Co., Limited | Private company limited by shares | Live |
| UBSP LIMITED | Private company limited by shares | Live |
| UBSP GLOBAL LIMITED | Private company limited by shares | Live |
| UBSYNERGY LIMITED | Private company limited by shares | Dissolved |
| HK UBTECH LIMITED | Private company limited by shares | Live |
| uBuddi Limited | Private company limited by shares | Live |
| U-BUDDY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UBUILD HOME PRODUCTS CO., LIMITED | Private company limited by shares | Live |
| UBUNTU LIMITED | Private company limited by shares | Live |
| UBUNTUFY LIMITED | | Live |
| Ubuy Company Limited | Private company limited by shares | Live |
| UBuy Eat Limited | | Live |
| Ubuy Technology Limited | Private company limited by shares | Live |
| Ubuygo Limited | Private company limited by shares | Live |
| UBUYIBUY.COM LIMITED | Private company limited by shares | Dissolved |