| AMZ Thinktank Limited | Private company limited by shares | Live |
| HM THINKTANK Limited | | Live |
| BaseLake ThinkTank (HongKong) Company Limited | | Live |
| THINKTANK (CHINA) LIMITED | Private company limited by shares | Dissolved |
| CHINA THINKTANK LIMITED | Private company limited by shares | Live |
| China ThinkTank (HK) Limited | Private company limited by shares | Live |
| THINK-TANK BUSINESS CONSULTING LIMITED | Private company limited by shares | Live |
| THINK-TANK (HK) COMPANY LIMITED | Private company limited by shares | Live |
| ThinkTank Learning Education Hong Kong Company Limited | Private company limited by shares | Live |
| INTERHOO THINKTANK LIMITED | Private company limited by shares | Dissolved |
| Metaverse Thinktank Investment Company Limited | | Live |
| LIFE THINKTANK COMPANY LIMITED | Private company limited by shares | Live |
| HON WIK THINKTANK INVESTMENT MANAGEMENT (H.K.) LIMITED | Private company limited by shares | Dissolved |
| THINKTANK MEDIA LIMITED | Company limited by guarantee | Live |
| Thinktank Publishing Limited | Private company limited by shares | Live |
| THINKTANK AUDIO-VISUAL SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| SURE CAPITAL THINK-TANK GROUP LIMITED | Private company limited by shares | Live |
| ThinkTank System Limited | Private company limited by shares | Live |
| THINKTANK SYSTEM (HK) LIMITED | Private company limited by shares | Live |
| THINKTANK SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| CHINESE THINK-TANK UNITED ASSOCIATION LIMITED | Private company limited by shares | Live |
| YANS THINKTANK LIMITED | Private company limited by shares | Live |