| C.Y. LIU & COMPANY LIMITED | Private company limited by shares | Dissolved |
| C.Y. (2012) LIMITED | Private company limited by shares | Live |
| C.Y. (CHINA) LIMITED | Private company limited by shares | Dissolved |
| C.Y. CONSTRUCTION COMPANY LIMITED | Private company limited by shares | Live |
| C.Y. ENTERPRISE LIMITED | Private company limited by shares | Live |
| C.Y. (Hong Kong) Consultancy Limited | Private company limited by shares | Live |
| C.Y. Investment Limited | Private company limited by shares | Dissolved |
| C.Y. KWAN & SONS LIMITED | Private company limited by shares | Live |
| C.Y. LEUNG & COMPANY LIMITED | Private company limited by shares | Live |
| C.Y. LEUNG & COMPANY LIMITED | Private company limited by shares | Live |
| C.Y. KUNG PRODUCTIONS LIMITED | Private company limited by shares | Dissolved |
| C.Y. PROMOTION LIMITED | Private company limited by shares | Dissolved |
| C.Y. SHIM COMPANY LIMITED | Private company limited by shares | Live |
| C.Y. TIRE LIMITED | Private company limited by shares | Dissolved |
| C.Y. TONG COMPANY LIMITED | Private company limited by shares | Dissolved |
| C.Y. TOP, LIMITED | Private company limited by shares | Live |
| C.Y. YU TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| C.Y. Beauty & Trading Limited | Private company limited by shares | Live |
| WING HAN (CY) LIMITED | Private company limited by shares | Dissolved |
| C.Y. WONG & COMPANY LIMITED | Private company limited by shares | Dissolved |
| CY2000 INTERNATIONAL LIMITED | Private company limited by shares | Live |
| CY4EA LIMITED | Private company limited by shares | Dissolved |
| CYACA COMPANY LIMITED | | Live |
| CYAMLAN INVESTMENT GROUP LIMITED | Private company limited by shares | Live |
| CYAN LIMITED | Private company limited by shares | Live |
| HK CYAN LIMITED | Private company limited by shares | Live |
| Cyan Marque Agency Limited | | Live |
| CYAN ANGEL LIMITED | Private company limited by shares | Live |
| CYAN ASIA LIMITED | Private company limited by shares | Dissolved |
| CYAN CLOUD INTERNATIONAL (CHINA) LIMITED | Private company limited by shares | Live |
| Cyan Cloud Limited | | Live |
| Cyan Cloud Trade Limited | | Live |
| Cyan Sun International Co., Limited | Private company limited by shares | Live |
| Cyan Investment Consulting Company Limited | Private company limited by shares | Live |
| CYAN INTERNATIONAL BUSINESS CORPORATION LIMITED | Private company limited by shares | Live |
| Cyan Creation Limited | Private company limited by shares | Live |
| CYAN CREATIONS LIMITED | Private company limited by shares | Live |
| CYAN DESIGN & PARTNERS LIMITED | Private company limited by shares | Dissolved |
| CYAN ENERGY GROUP LIMITED | Private company limited by shares | Live |
| GREAT CYAN INDUSTRIAL (HK) CO., LIMITED | Private company limited by shares | Live |
| Cyan Green Corporate Service Limited | | Live |
| CYAN CLOUD INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| CYAN HOLDING LIMITED | Private company limited by shares | Live |
| CYAN (HONG KONG) LIMITED | Private company limited by shares | Live |
| CYAN (HONG KONG) TECHNOLOGY LIMITED | | Live |
| Cyan Innovation Limited | Private company limited by shares | Live |
| CYAN INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Cyan Production Company Limited | Private company limited by shares | Live |
| Cyan River Investment Limited | Private company limited by shares | Live |
| Cyan Spring Limited | Private company limited by shares | Dissolved |
| Cyan Stone Limited | Private company limited by shares | Live |
| CYAN TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| HK Cyan Bird Times Technology Co., Limited | | Live |
| CYAN MOUNTAIN TECHNOLOGY CO. LIMITED | Private company limited by shares | Dissolved |
| Cyan Network Technology Limited | | Live |
| Cyan Space Time Limited | | Live |
| NINGBO CYAN INTERNATIONAL TRADE COMPANY LIMITED | Private company limited by shares | Live |
| Cyan Green Trading Limited | | Live |
| CYAN TRADING (HK) LIMITED | Private company limited by shares | Live |
| CYAN WOODS INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Cyanbat (Hong Kong) Industrial Co., Limited | Private company limited by shares | Live |
| CYAN-FIRE CORPORATION LIMITED | Private company limited by shares | Live |
| China Cyanhill Capital Co., Limited | | Live |
| SEIT Cyanide Production Company Limited | Private company limited by shares | Dissolved |
| Cyanines Biotech Co., Limited | Private company limited by shares | Live |
| Cyanlite Technology Co., Limited | Private company limited by shares | Live |
| Cyanlux Co., Limited | Private company limited by shares | Dissolved |
| Cyanmaze Limited | Private company limited by shares | Live |
| CYANMOB LIMITED | Private company limited by shares | Live |
| Cyap Limited | Private company limited by shares | Live |
| C-YAT ENTERPRISE LIMITED | Private company limited by shares | Live |
| ANOTN CYATH CO., LIMITED | Private company limited by shares | Live |
| Cyathea Co Limited | | Live |
| CYATHEA COMPUTATIONAL TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| CYBA OUTSOURCING LIMITED | Private company limited by shares | Dissolved |
| Cyba System Limited | Private company limited by shares | Live |
| CYBAFIT LIMITED | Private company limited by shares | Dissolved |
| Cybalink Solutions Limited | Private company limited by shares | Live |
| CYBAPOLIS LIMITED | Private company limited by shares | Dissolved |
| CYBAT.NET TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Cybaverse Limited | | Live |
| Cybba APAC Limited | Private company limited by shares | Live |
| Cybba APAC Holdings Limited | Private company limited by shares | Live |
| CyBearSec Limited | | Live |
| Cybeast Limited | Private company limited by shares | Live |
| CYBEE SOLUTION LIMITED | Private company limited by shares | Live |
| Cybele Limited | Private company limited by shares | Live |
| CYBELE (Asia) Limited | Private company limited by shares | Live |
| CYBELES BEAUTY CONTEST INSTITUTION CO., LIMITED | Private company limited by shares | Dissolved |
| CYBELE-WISE (HK) ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Cybelker Smart Electronics Limited | | Live |
| CYBELLE LIMITED | Private company limited by shares | Dissolved |
| CYBENQ.COM LIMITED | Private company limited by shares | Live |
| Cybepunch Limited | | Live |
| CYBER MAP LIMITED | Private company limited by shares | Dissolved |
| CYBER LIMITED | Private company limited by shares | Dissolved |
| CYBER CAD LIMITED | Private company limited by shares | Dissolved |
| CYBER PRO COMPANY LIMITED | Private company limited by shares | Dissolved |
| CYBER HUB LIMITED | Private company limited by shares | Dissolved |
| TOP CYBER LIMITED | Private company limited by shares | Dissolved |