| BEST CASTLE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Bottles and Beverage Castle Limited | Private company limited by shares | Live |
| BLACK CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE BLAZE LIMITED | Private company limited by shares | Live |
| BLOOM CASTLE COMPANY LIMITED | Private company limited by shares | Dissolved |
| BLOOM CASTLE LIMITED | Private company limited by shares | Live |
| BONNE CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE BRIGHT LIMITED | Private company limited by shares | Live |
| Broadcaster Castle Entertainment Co., Limited | Private company limited by shares | Live |
| BROOK CASTLE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| CASTLE BROTHERS LIMITED | Private company limited by shares | Live |
| CASTLE PEAK BUDDHIST SCHOOL LIMITED | Company limited by guarantee | Live |
| BUILD CASTLE LIMITED | Private company limited by shares | Dissolved |
| BUILD CASTLE LIMITED | Private company limited by shares | Live Commenced dormancy on 09-Apr-2015 |
| CASTLE BUSINESS LIMITED | Private company limited by shares | Live |
| CASTLE CAFE HK LIMITED | Private company limited by shares | Live |
| CAPITAL CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE CAPITAL LIMITED | Private company limited by shares | Live |
| Castle Rock Capital Investments Limited | Private company limited by shares | Live |
| Happy Castle Catering Limited | Private company limited by shares | Live |
| CENTRAL CASTLE LIMITED | Private company limited by shares | Dissolved |
| CENTRAL CASTLE INVESTMENT LIMITED | Private company limited by shares | Live |
| CENTURY CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE CENTURY LIMITED | Private company limited by shares | Live |
| CASTLE PEAK CERAMIC COMPANY, LIMITED | Private company limited by shares | Dissolved |
| CASTLE PEAK CERAMIC COMPANY (1940) LIMITED | Private company limited by shares | Dissolved |
| CHAMP CASTLE LIMITED | Private company limited by shares | Dissolved |
| CHAMP CASTLE LIMITED | Private company limited by shares | Live |
| CHAMP CASTLE LIMITED | | Live |
| CHAMPION CASTLE LIMITED | Private company limited by shares | Dissolved |
| CHAMPION CASTLE LIMITED | Private company limited by shares | Live |
| CHAMPION CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE CHAMPION LIMITED | Private company limited by shares | Live |
| CHAMPION CASTLE INVESTMENTS LIMITED | Private company limited by shares | Live |
| CHARM CASTLE LIMITED | Private company limited by shares | Dissolved |
| CHARM CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE CHARM LIMITED | Private company limited by shares | Live |
| CHARM CASTLE (HONG KONG) LIMITED | Private company limited by shares | Live |
| CASTLE CHASE LIMITED | Private company limited by shares | Live |
| French Castle Chateau Lafite Limited | Private company limited by shares | Live |
| CHINA CASTLE COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHINA CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE CHINA LIMITED | Private company limited by shares | Live |
| TOP CASTLE (CHINA) LIMITED | Private company limited by shares | Dissolved |
| CHINA CASTLE LIMITED | | Live |
| CHINA CASTLE LIMITED | | Live |
| CHINA CASTLE ASIA LIMITED | Private company limited by shares | Live |
| CHINA CASTLE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| CHINA CASTLE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| CHINA CASTLE ENTERPRISES LIMITED | Private company limited by shares | Live |
| CHINA CASTLE HONG KONG LIMITED | Private company limited by shares | Live |
| CHINA CASTLE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| CHINA CASTLE INVESTMENTS LIMITED | Private company limited by shares | Live |
| CHINA CASTLE PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| CHINA CASTLE TEXTILES LIMITED | Private company limited by shares | Dissolved |
| VERSAILLES CASTLE CHINA LIMITED | Private company limited by shares | Live |
| Christopher Castle Limited | Private company limited by shares | Live |
| CASTLE CLEANING SERVICE COMPANY LIMITED | Private company limited by shares | Live |
| CLEVER CASTLE LIMITED | Private company limited by shares | Dissolved |
| CLEVER CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| Gnome Castle Co., Limited | | Live |
| CASTLE IMP&EXP CO., LIMITED | Private company limited by shares | Live |
| NEW CASTLE METALS CO., LIMITED | Private company limited by shares | Live |
| Castle moon co., Limited | Private company limited by shares | Live |
| Castle Peak Bay Sea Amusement Co., LIMITED | | Live |
| GLOW CASTLE PET PRODUCT CO., LIMITED | Private company limited by shares | Live |
| CASTLE SERVICE CO., LIMITED | Private company limited by shares | Dissolved |
| SEA CASTLE SHIPPING CO., LIMITED | Private company limited by shares | Live |
| CASTLE DRAGON SHIPPING CO., LIMITED | Private company limited by shares | Dissolved |
| Castle Trade Co., Limited | Private company limited by shares | Live |
| CASTLE PEAK COLD STORAGE & ICE MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| COMMERCIAL CASTLE LIMITED | Private company limited by shares | Dissolved |
| CASTLE CONCEPT LIMITED | | Live |
| CASTLE CONSTRUCTION & CONSULTING LIMITED | Private company limited by shares | Dissolved |
| GOLD CASTLE CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| GOLD CASTLE CONSTRUCTION LIMITED | Private company limited by shares | Dissolved |
| CASTLE PEAK QUARRY & CONSTRUCTION COMPANY, LIMITED | Private company limited by shares | Dissolved |
| K'S CASTLE CONSTRUCTION SERVICE COMPANY LIMITED | Private company limited by shares | Live |
| CASTLE CONSULTING LIMITED | Private company limited by shares | Live |
| CASTLE CONSULTING (ASIA) LIMITED | Private company limited by shares | Dissolved |
| DRAGON CASTLE CONSULTING LIMITED | Private company limited by shares | Live |
| CASTLE PEAK CONSULTING LIMITED | Private company limited by shares | Dissolved |
| CREATION CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE CREATION LIMITED | Private company limited by shares | Live |
| New Castle Creation Limited | Private company limited by shares | Live |
| CHARM CASTLE CREATION LIMITED | Private company limited by shares | Live |
| Nice Castle Creation Limited | Private company limited by shares | Live |
| Dragon Castle Wealth Creation Limited | Private company limited by shares | Live |
| Castle Creations Asia Limited | Private company limited by shares | Live |
| CREATIVE CASTLE LIMITED | Private company limited by shares | Live |
| CREATIVE CASTLE LIMITED | | Live |
| CASTLE CROWN LIMITED | Private company limited by shares | Dissolved |
| CROWN CASTLE LIMITED | Private company limited by shares | Live |
| CROWN CASTLE (HONG KONG) LIMITED | Private company limited by shares | Live |
| CYBER CASTLE LIMITED | Private company limited by shares | Dissolved |
| CYBER CASTLE LIMITED | Private company limited by shares | Live |
| DELUXE CASTLE LIMITED | Private company limited by shares | Live |
| J. CASTLE DESIGN LIMITED | Private company limited by shares | Live |
| Castle Design Limited | Private company limited by shares | Live |