| CASTLEHOME LIMITED | Private company limited by shares | Live Commenced dormancy on 29-Jan-2000 |
| CASTLELAND COMPANY LIMITED | Private company limited by shares | Dissolved |
| Castlelite Limited | Private company limited by shares | Live |
| CASTLEMAINE LIMITED | Private company limited by shares | Dissolved |
| CASTLEMONT PACIFIC COMPANY LIMITED | Private company limited by shares | Dissolved |
| CASTLEMOUNTAIN LIMITED | Private company limited by shares | Live |
| CASTLEMOUNTAIN ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| CASTLEPOINT COMPANY LIMITED | Private company limited by shares | Dissolved |
| CASTLEPOINT LIMITED | Private company limited by shares | Live |
| CASTLEREAGH LIMITED | Private company limited by shares | Dissolved |
| CASTLEROCK LIMITED | Private company limited by shares | Dissolved |
| Castlerock Asia Limited | Private company limited by shares | Live |
| AsianBeautyWholesale Castlers Limited | | Live |
| CASTLERS SOFTWARE COMPANY LIMITED | Private company limited by shares | Live |
| CASTLES IN THE SKY CO., LIMITED | Private company limited by shares | Live |
| TREASURE CASTLES INVESTMENT CONSULTANT LIMITED | Private company limited by shares | Dissolved |
| CASTLES & HERMES COMPANY LIMITED | Private company limited by shares | Live |
| LINK CASTLES (HOLDINGS) LIMITED | Private company limited by shares | Dissolved |
| Castles Property Agency Limited | Private company limited by shares | Live |
| SEVEN CASTLES PAPER COMPANY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Gold Castles Associates - TGIF F H K Limited | Private company limited by shares | Live |
| Castlespring Limited | Private company limited by shares | Live |
| CASTLESTONE MANAGEMENT (HK) LIMITED | Private company limited by shares | Dissolved |
| CASTLETON LIMITED | Private company limited by shares | Dissolved |
| CASTLETON LIMITED | Private company limited by shares | Dissolved |
| CASTLETOWN LIMITED | Private company limited by shares | Dissolved |
| CASTLETOWN TRADING LIMITED | Private company limited by shares | Dissolved |
| CASTLEVIEW INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| CASTLEWAY LIMITED | Private company limited by shares | Dissolved |
| CASTLEWAY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CastleWe Limited | Private company limited by shares | Live |
| CASTLEWICK ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| CASTLEWIN COMPANY LIMITED | Private company limited by shares | Dissolved |
| CASTLEWOOD LIMITED | Private company limited by shares | Dissolved |
| CASTLEWOOD ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| CASTLEWOOD INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| FRANCE CASTLF SHARES COMPANY LIMITED | Private company limited by shares | Dissolved |
| CUSTOM CASTLINE LIMITED | Private company limited by shares | Dissolved |
| CASTMASTER APPLIANCES LIMITED | Private company limited by shares | Dissolved |
| CASTMEN INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| CASTNOVO (HK) LIMITED | Private company limited by shares | Live |
| CASTO LIMITED | Private company limited by shares | Dissolved |
| CASTON COMPANY LIMITED | Private company limited by shares | Dissolved |
| CASTON TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| CASTON GROUP CORPORATION LIMITED | Private company limited by shares | Live |
| CASTON DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| FRANCE CASTON GRAPE MANOR LIMITED | Private company limited by shares | Live |
| HONGKONG CASTON TRADING CO., LIMITED | Private company limited by shares | Live |
| CASTON HOTEL CO., LIMITED | Private company limited by shares | Live |
| CASTON INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| CASTON INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CASTON INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| HONG KONG CASTON INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| CASTON INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| CASTON INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| CASTONA INVESTMENT LIMITED | Private company limited by shares | Live |
| CASTONE ENTERPRISE CO., LIMITED | Private company limited by shares | Dissolved |
| Castone Technology (HK) Co., Limited | Private company limited by shares | Live |
| CASTOP COMPANY LIMITED | Private company limited by shares | Dissolved |
| Castopia Limited | | Live |
| CASTOR COMPANY LIMITED | Private company limited by shares | Dissolved |
| Castor Limited | Private company limited by shares | Live |
| CASTOR LIMITED | Private company limited by shares | Live |
| CASTOR HOLDING LIMITED | Private company limited by shares | Live |
| CASTOR INVESTMENTS LIMITED | Private company limited by shares | Live |
| HONGKONG CASTOR AND POLLUX MARINE & OFFSHORE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Castor Advanced Solutions Limited | Private company limited by shares | Dissolved |
| CASTORES MAGI (HONG KONG) LIMITED | Private company limited by shares | Live |
| CASTORES MAGI ASIA LIMITED | Private company limited by shares | Live |
| CASTORP LIMITED | Private company limited by shares | Dissolved |
| British Castors Limited | Private company limited by shares | Live |
| REALTIME CASTPAPER LIMITED | Private company limited by shares | Live |
| CASTPET COMPANY LIMITED | Private company limited by shares | Dissolved |
| CASTPILLAR COMPANY LIMITED | Private company limited by shares | Dissolved |
| CASTRA LIMITED | Private company limited by shares | Dissolved |
| CASTRA CPA LIMITED | Private company limited by shares | Live |
| Castra Resources Management Limited | Private company limited by shares | Live Commenced dormancy on 22-Jan-2016 |
| Castra Praetoria Limited | Private company limited by shares | Live |
| CASTRANO LIMITED | Private company limited by shares | Dissolved |
| CASTRIES COMPANY LIMITED | Private company limited by shares | Dissolved |
| CASTRIX INVESTMENT LIMITED | Private company limited by shares | Live |
| H. A. CASTRO & COMPANY, LIMITED | Private company limited by shares | Dissolved |
| DCS CASTRO LIMITED | Private company limited by shares | Live |
| CASTROL (CHINA) LIMITED | Private company limited by shares | Live |
| U.K. CASTROL CO., LIMITED | Private company limited by shares | Dissolved |
| Castron Limited | Private company limited by shares | Live |
| CASTRON (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| CASTRON ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| CASTRONG LIMITED | Private company limited by shares | Dissolved |
| CASTROOM LIMITED | Private company limited by shares | Dissolved |
| CASTRUM LIMITED | Private company limited by shares | Live |
| CASTRUM CIBUS LIMITED | Private company limited by shares | Live |
| CASTRY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| CASTSIN LIMITED | Private company limited by shares | Dissolved |
| SUCCESS CAST-TECH LIMITED | Private company limited by shares | Live |
| CAstudy Limited | Private company limited by shares | Live |
| CASTUS WIN INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| CASTUS VICTORY COMPANY LIMITED | Private company limited by shares | Dissolved |
| CASTWAY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| CASTWELL INVESTMENT LIMITED | Private company limited by shares | Live |