| Cuckoo Capital Limited | Private company limited by shares | Live |
| CUCKOO (HK) SOFT OUTFIT TECHNOLOGY HOLDING LIMITED | Private company limited by shares | Live |
| CUCKOOBAG LIMITED | Private company limited by shares | Live |
| CUCKOOO HOME LIMITED | Private company limited by shares | Live |
| CUCKOOTEK ACOUSTIC CO., LIMITED | Private company limited by shares | Live |
| Cucos HK International Limited | Private company limited by shares | Live |
| CU-Craft Limited | | Live |
| Cucu Limited | Private company limited by shares | Live |
| Cucu Mor Creative Limited | | Live |
| Cucumba Concepts Limited | Private company limited by shares | Live |
| Cucumber Limited | Private company limited by shares | Live |
| CUCUMBER LIMITED | Private company limited by shares | Live |
| China Sea Cucumber Health Industry Association Limited | Private company limited by shares | Live |
| SHANDONG AJIN SEA CUCUMBER RESPONSIBILITY CO., LIMITED | Private company limited by shares | Dissolved |
| CUCUMO LIMITED | Private company limited by shares | Live |
| CUCUS LIMITED | Private company limited by shares | Live |
| Cuda Limited | | Live |
| CUDDESDON LIMITED | Private company limited by shares | Dissolved |
| CUDDINGTON LIMITED | Private company limited by shares | Dissolved |
| CUDDINGTON JAMLIG ANIMATION STUDIO LIMITED | Private company limited by shares | Dissolved |
| CUDDLE WIT LIMITED | Private company limited by shares | Dissolved |
| Pet Cuddle Limited | Private company limited by shares | Live |
| Buttercup Cuddle Limited | Private company limited by shares | Live |
| CUDDLE TRADE CO., LIMITED | | Live |
| CUDDLE FACTORY LIMITED | Private company limited by shares | Live |
| CUDDLEFED LIMITED | Private company limited by shares | Live |
| CuddleMe Inc Limited | Private company limited by shares | Live |
| CUDDLES & FRIENDS LIMITED | Private company limited by shares | Live |
| CUDDON INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| CUDGEN LIMITED | Private company limited by shares | Dissolved |
| CUDO LIMITED | | Live |
| CUDOS HK LIMITED | Private company limited by shares | Live |
| Cudos Concepts Limited | Private company limited by shares | Live |
| Cudrix HK Limited | Private company limited by shares | Live |
| FRENCH CUDU BIOLOGICAL ENGINEERING CO., LIMITED | Private company limited by shares | Live |
| CUDWORTH INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| CUDYLL LIMITED | Private company limited by shares | Live |
| C.U.E. ASIA LIMITED | Private company limited by shares | Live |
| CueBaller Co. Limited | | Live |
| Korea Cueda Commercial Group Limited | Private company limited by shares | Live |
| CUEN KOK TUNG EXPRESS LIMITED | Private company limited by shares | Dissolved |
| Llorente & Cuenca / 11 Limited | Private company limited by shares | Live |
| Cuendillar Limited | Private company limited by shares | Live |
| CUENOD THERMO TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| Cueone Limited | Private company limited by shares | Live |
| CUEP LIMITED | Private company limited by shares | Live |
| Cuepower Asia Limited | Private company limited by shares | Live |
| CUERNOS HOLDING LIMITED | Private company limited by shares | Dissolved |
| CUERO M. F. LIMITED | Private company limited by shares | Live |
| El Cuero Limited | Private company limited by shares | Live |
| CUEROS (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| CUERPO TRADING COMPANY LIMITED | Private company limited by shares | Live |
| CUERVA ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| CUFE-TECH LIMITED | Private company limited by shares | Live |
| Cuff Care (Asia) Limited | Private company limited by shares | Dissolved |
| CUFFFS LIMITED | Private company limited by shares | Live |
| CHINA CUFFLINK FACTORY (HONG KONG) LIMITED | Private company limited by shares | Live |
| Incolorful Cufflink Limited | Private company limited by shares | Live |
| Angel Cufflinks Jewelry Limited | Private company limited by shares | Live |
| CUFX TRADING LIMITED | Private company limited by shares | Live |
| CUGATE LIMITED | Private company limited by shares | Live |
| CUGE (CHINA) INVESTMENT CO., LIMITED | Private company limited by shares | Dissolved |
| CUGLE COMPANY LIMITED | Private company limited by shares | Live |
| CUGU GROUP (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| CUGU MINERALS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CUHK GREATER BAY AREA ALUMNI ASSOCIATION LIMITED | Company limited by guarantee | Live |
| CUHK HEALTH LIMITED | Private company limited by shares | Live |
| CUHK Innovation Limited | | Live |
| CUIDAD COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONGKONG CUIDAFU JEWELLERY LIMITED | Private company limited by shares | Dissolved |
| CHINA CUIFENG JEWELRY LIMITED | Private company limited by shares | Live |
| WANG CUIFENG LIMITED | Private company limited by shares | Live |
| HK CUIHAI DIET GROUP LIMITED | Private company limited by shares | Live |
| HK CUIHE JEWELRY LIMITED | Private company limited by shares | Live |
| CUIHUA LIMITED | Private company limited by shares | Live |
| CUIHUO TRADING CO., LIMITED | Private company limited by shares | Live |
| CUIIENG (HK) COMPANY LIMITED | Private company limited by shares | Live |
| Hong Kong Cuikai Trading Co., Limited | | Live |
| Cuilin Education Company Limited | | Live |
| CUILIN INTERNATIONAL (CHINA) AGRICULTURE LIMITED | Private company limited by shares | Live |
| BAO CUILIN INT'L CREATION LIMITED | Private company limited by shares | Live |
| CUILIN INT'L CREATION LIMITED | Private company limited by shares | Live |
| HONG KONG CUILU DESIGN LIMITED | Private company limited by shares | Dissolved |
| Cuilu Precious Metals Company Limited | | Live |
| CUI&LUO Company Limited | Private company limited by shares | Live |
| CUIQU 36 LIMITED | Private company limited by shares | Live |
| LE CUIR COMPANY LIMITED | Private company limited by shares | Live |
| Cuir Boutique (HK) Limited | Private company limited by shares | Live |
| FRANCE CUIR CENTER FURNITURE GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| SUPREME CUIR INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| CUIRASIA LIMITED | Private company limited by shares | Live |
| CUIRASS LIMITED | Private company limited by shares | Dissolved |
| CUIRU LIMITED | Private company limited by shares | Dissolved |
| CUIS MUSIC (HONG KONG) LIMITED | Private company limited by shares | Live |
| CUI'S FATHER AND SON INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| HK CUISHIYUAN JEWELRY LIMITED | Private company limited by shares | Live |
| CUISINE X LIMITED | Private company limited by shares | Live |
| HEY CUISINE LIMITED | Private company limited by shares | Live |
| LA CUISINE LIMITED | Private company limited by shares | Dissolved |
| WKM Cuisine Limited | Private company limited by shares | Live |