| Mathema Technology Limited | Private company limited by shares | Live |
| INTERNATIONAL MATHEMATICAL MODELING CHALLENGE COMMITTEE (ZHONGHUA) LIMITED | Company limited by guarantee | Live |
| MATHEMATICAL CORPORATION (HK) LIMITED | Private company limited by shares | Live |
| S.T. YAU FOUNDATION FOR MATHEMATICAL RESEARCH AND DEVELOPMENT LIMITED | Company limited by guarantee | Live |
| Globle Mathematical Modeling Certificate Authority Limited | Private company limited by shares | Live |
| HEIDIAN MATHEMATICAL INTELLIGENCE TECHNOLOGY LIMITED | | Live |
| Hong Kong Mathematical Association Limited | Private company limited by shares | Live |
| Hong Kong Children's Mathematical and Reasoning Logic Company Limited | | Live |
| INTERNATIONAL MATHEMATICAL OLYMPIAD HONG KONG COMMITTEE LIMITED -THE- | Company limited by guarantee | Live |
| Hong Kong Mathematical Olympics Learning Company Limited -The- | Private company limited by shares | Live |
| Space-Time Mathematical Information Forecast International Limited | Private company limited by shares | Live |
| INTERNATIONAL MATHEMATICAL ASSOCIATION OF EUCLIDEAN LIMITED | Private company limited by shares | Dissolved |
| INTERNATIONAL MATHEMATICAL ASSOCIATION OF EUCLIDEAN LIMITED | Private company limited by shares | Live |
| International Mathematical Olympiad Company Limited | Private company limited by shares | Live |
| MATHEMATICAL STAR INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| HK BIBO MATHEMATICAL CURRENCY ASSET MANAGEMENT CO., LIMITED | Private company limited by shares | Live |
| Mathematical Olympiad & Creative Center Limited | Private company limited by shares | Live |
| Chinese Mathematical Olympiad Education Group Limited | Private company limited by shares | Live |
| HONG KONG MATHEMATICAL OLYMPIAD SCHOOL LIMITED | Company limited by guarantee | Live |
| ASIAN YOUTH MATHEMATICAL OLYMPIC INSTITUTE CO., LIMITED | Private company limited by shares | Live |
| Mathematical Solutions Limited | Private company limited by shares | Dissolved |
| KOBADAU MATHEMATICAL SENSE TRAINING CENTRE LIMITED | Private company limited by shares | Live |
| MATHEMATICS LIMITED | Private company limited by shares | Live |
| A.I Mathematics Limited | Private company limited by shares | Live |
| ES Mathematics Limited | Private company limited by shares | Live |
| Mr Mathematics Limited | Private company limited by shares | Live |
| Business Mathematics Limited | Private company limited by shares | Live |
| CHINA MATHEMATICS ASSOCIATION LIMITED | Private company limited by shares | Live |
| Craftsman Mathematics Limited | | Live |
| Mathematics Education Limited | Private company limited by shares | Live |
| To Jai Mathematics Education Limited | | Live |
| HIGHER MATHEMATICS EDUCATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHINA MATHEMATICS EDUCATIONAL TECHNIQUE ASSOCIATION LIMITED | Private company limited by shares | Live |
| Interactive Mathematics Foundation Limited | Private company limited by shares | Live |
| Hong Kong Dongqi Mathematics Co., Limited | | Live |
| HONG KONG GIFTED MATHEMATICS ASSOCIATION LIMITED | Private company limited by shares | Live |
| Mobius Mathematics Limited | Private company limited by shares | Live |
| HON LAM MATHEMATICS & MUSIC STUDIO LIMITED | Private company limited by shares | Live |
| Peking University Mathematics Foundation Limited | Company limited by guarantee | Live |
| Pure Mathematics Olympiad Company Limited | Private company limited by shares | Live |
| Shengang Zhongke Mathematics Research Association Company Limited | Private company limited by shares | Live |
| HK MATHEMATICS OLYMPICS SCHOOL LIMITED | Private company limited by shares | Dissolved |
| MatheMatters Learning Community Limited | Private company limited by shares | Live |