| ENG MATH 100 LIMITED | Private company limited by shares | Dissolved |
| MATH LIMITED | Private company limited by shares | Dissolved |
| Math Art Limited | Private company limited by shares | Live |
| 2040 MATH SYSTEM LIMITED | Private company limited by shares | Dissolved |
| MATH LOGIC LIMITED | Private company limited by shares | Live |
| Mega Math Limited | Private company limited by shares | Live |
| Math View Limited | Private company limited by shares | Live |
| Mathai Technology Limited | | Live |
| MATHALL LIMITED | Private company limited by shares | Dissolved |
| MathCognify Technologies Limited | Private company limited by shares | Live |
| MATHCOM LIMITED | Private company limited by shares | Live |
| Mathconcept Learning Center Limited | Private company limited by shares | Live |
| MATHCONCEPT EDUCATION LIMITED | Private company limited by shares | Live |
| Mathday Limited | | Live |
| Mathea HK Limited | | Live |
| MATHEASY TECHNOLOGY LIMITED | | Live |
| 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 |
| MATHER LIMITED | Private company limited by shares | Live |
| SUNKISS MATHERM HK LIMITED | Private company limited by shares | Live |
| Mathesaurus Limited | Private company limited by shares | Live |
| RICH MATHESON LIMITED | Private company limited by shares | Live |
| STANDARD MATHESON LIMITED | Private company limited by shares | Live |
| Mathetactics Education Limited | Private company limited by shares | Live |
| Matheus Global Capital Corporations Limited | Private company limited by shares | Live |
| MATHEW JEWELLERY COMPANY LIMITED | Private company limited by shares | Live |
| Mathew Luxury Limited | | Live |
| MATHEWSON INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| MATHFIELDS LIMITED | Private company limited by shares | Live |
| MATHGIC EDUCATION LIMITED | Private company limited by shares | Live |
| MathGravi Limited | Private company limited by shares | Live |
| MATHIAS (HK) LIMITED | Private company limited by shares | Dissolved |
| MATHIAS & ASSOCIATES HONG KONG HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| MATHIEU (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Mathilde Technology (Hong Kong) Limited | Private company limited by shares | Live |
| MATHIOT LIMITED | Private company limited by shares | Dissolved |
| Lucas Mathis Brother Limited | Private company limited by shares | Live |
| Mathis Technology Limited | Private company limited by shares | Live |
| Mathison Co., Limited | Private company limited by shares | Live |
| Mathkey Asset Management Limited | Private company limited by shares | Dissolved |
| Mathlab Limited | Private company limited by shares | Live |
| MATHO ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| MATHOD LIMITED | Private company limited by shares | Live |
| Mathod (Man Wai) Academy Limited | Private company limited by shares | Live |
| MATHOLIC LIMITED | Private company limited by shares | Live |
| MATHOME EDUCATION CENTRE LIMITED | Private company limited by shares | Live |
| Mathome Education Centre (Hang Hau) Limited | Private company limited by shares | Live |
| MATHOME EDUCATION CENTRE (PRINCE EDWARD) LIMITED | | Live |
| MATHOME EDUCATION CENTRE (SAI WAN HO) LIMITED | | Live |
| MATHOP LIMITED | Private company limited by shares | Live |
| MathPluScience Private Limited | Private company limited by shares | Live |
| IT MATHS COMPANY LIMITED | Private company limited by shares | Live |
| Wun Ka Wai Maths Limited | Private company limited by shares | Live |
| MATHS 100.COM LIMITED | Private company limited by shares | Dissolved |
| CANOTTA MATHS LEARNING CENTRE LIMITED | Private company limited by shares | Live |
| DR. CHAN MATHS DYNAMICS LIMITED | Private company limited by shares | Live |
| Maths Master Education Limited | Private company limited by shares | Live |
| Mental Maths Education Company Limited | Private company limited by shares | Dissolved |
| Raymond Maths Education Limited | | Live |