| 21CHAU PTY LIMITED | Private company limited by shares | Dissolved |
| CITIC 21CN DIGITAL TELEVISION AND MOVIES LIMITED | Private company limited by shares | Live |
| 21CN SUNSHINE (HOLDINGS) COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG 21CN COMMERCIAL TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| 21CSS.COM LIMITED | Private company limited by shares | Dissolved |
| 21Dayak Trading Limited | Private company limited by shares | Dissolved |
| 21-Forever Group Co., Limited | Private company limited by shares | Dissolved |
| 21KIDS.COM (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| 21labo Limited | | Live |
| 21menu.com Limited | Private company limited by shares | Dissolved |
| 21Pink Limited | Private company limited by shares | Live |
| 21SHOP LIMITED | Private company limited by shares | Dissolved |
| 21ST CENTURY AGENCIES LIMITED | Private company limited by shares | Live |
| 21ST CENTURY INSURANCE & FINANCIAL AGENCY LIMITED | Private company limited by shares | Live |
| 21ST CENTURY CHINA INDIA CENTER FOR CULTURE AND COMMUNICATION LIMITED | Private company limited by shares | Live |
| 21ST CENTURY FUR COMPANY LIMITED | Private company limited by shares | Dissolved |
| 21ST CENTURY COMPANY LIMITED | Private company limited by shares | Dissolved |
| 21st Century Limited | | Live |
| DRAGON 21ST CENTURY ADVERTISING COMPANY LIMITED | Private company limited by shares | Dissolved |
| 21ST CENTURY INVESTMENT HOLDING (CHINA) LIMITED | Private company limited by shares | Dissolved |
| 21st CENTURY ESON INNOVATION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| INTERNATIONAL SANITARY SUPPLY 21ST CENTURY CO., LIMITED | Private company limited by shares | Live |
| 21ST CENTURY CONCEPTS LIMITED | Private company limited by shares | Dissolved |
| ASIA 21ST CONSTRUCTION GROUP LIMITED | Private company limited by shares | Dissolved |
| 21st Century Copywriting Limited | Private company limited by shares | Live |
| 21ST CENTURY DETECTORS LIMITED | Private company limited by shares | Live |
| STUDIO 21ST CENTURY ENTERTAINMENT COMPANY LIMITED | Private company limited by shares | Live |
| EX-PRO 21ST CENTURY LIMITED | Private company limited by shares | Dissolved |
| 21ST CENTURY METAL FASHION COMPANY LIMITED | Private company limited by shares | Dissolved |
| 21ST CENTURY FILM COMPANY LIMITED | Private company limited by shares | Dissolved |
| 21ST PHOTOGRAPHY & FINE ART CO. LIMITED | Private company limited by shares | Dissolved |
| ASIA 21ST GROUP LIMITED | Private company limited by shares | Live |
| 21st Century Department Store (Hong Kong) Group Co., Limited | Private company limited by shares | Live |
| 21ST CENTURY INTERNATIONAL CARTOON GROUP (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| China 21st Century Hotels and Resort Chain Group (Hong Kong) Limited | Private company limited by shares | Live |
| 21ST CENTURY HEALTHCARE LIMITED | Private company limited by shares | Live |
| 21ST CENTURY MFG INC. LIMITED | Private company limited by shares | Live |
| 21ST CENTURY INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| 21ST CENTURY HONG KONG LIMITED | Private company limited by shares | Live |
| 21ST CENTURY JM (HONG KONG) LIMITED | Private company limited by shares | Live |
| 21st Century Learning Hong Kong Limited | Company limited by guarantee | Dissolved |
| 21st CENTURY JM TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Live |
| 21ST CENTURY LIFESTYLE LIMITED | Private company limited by shares | Live |
| Lighting 21st Limited | Private company limited by shares | Dissolved |
| 21ST CENTURY CHINA TECHNOLOGY FUND MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| 21st Century Bluesky Investment Management (Hongkong) Limited | Private company limited by shares | Live |
| 21ST CENTURY MUSIC FACTORY LIMITED | Private company limited by shares | Dissolved |
| 21st Century Fox Printing Limited | Private company limited by shares | Live |
| STUDIO 21ST CENTURY PRODUCTIONS LIMITED | Private company limited by shares | Dissolved |
| RFORMATION 21ST LIMITED | Private company limited by shares | Live |
| 21ST CENTURY (SHANGHAI) INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| 21st Century Maritime Silk Road Company Limited | Private company limited by shares | Live |
| 21ST CENTURY STRATEGIC ACADEME LIMITED | Private company limited by shares | Live |
| STUDIO 21ST CENTURY ENGINEERING LIMITED | Private company limited by shares | Live |
| 21ST CENTURY TOYS LIMITED | Private company limited by shares | Dissolved |
| 21ST-BESTZONE LIMITED | Private company limited by shares | Dissolved |
| 21ST-CN INTERNET PUBLISHING LIMITED | Private company limited by shares | Dissolved |
| 21team5 Company Limited | Private company limited by shares | Live |
| STORE 21UN LIMITED | Private company limited by shares | Live |
| 21Vianet Future Technology Limited | Private company limited by shares | Live |
| 21Vianet Global Limited | Private company limited by shares | Live |
| 21VIANET (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| 21well Limited | Private company limited by shares | Live |