| Mauricio | Bellini | Consejo Nacional de Investigaciones Científicas y Técnicas | Argentina | Physics and Astronomy | Cosmología y Gravitación | worldtopscientists.com |
| MATIEWOS MEKONEN | ABERA | Aksum University | Ethiopia | Energy | Sustainable Energy Engineering | worldtopscientists.com |
| Mathew Awine | Ayamdoo | Accra College of Education | Ghana | Arts and Humanities | Legal History, African History | worldtopscientists.com |
| Matevz | Mihelic | University of Ljubljana, Biotechnical Faculty | Slovenia | Environmental Science | Forestry | worldtopscientists.com |
| Máté | Szabados | HungaroMET | Hungary | Environmental Science | environment and health | worldtopscientists.com |
| Massart | Alain | Coimbra University | Portugal | Other | Nutrition and Sports Sciences | worldtopscientists.com |
| Masoumeh | Bararzadeh Ledari | Amirkabir University of Technology | Finland | Energy | Modeling | worldtopscientists.com |
| Masoud | Deyranlou | Islamic Azad University | Iran | Engineering | Optical Networking | worldtopscientists.com |
| Masih | Paknejad | KSF- Institute for advanced manufacturing | Germany | Engineering | Advanced Manufacturing | worldtopscientists.com |
| Maryam | Rahimi Jahangirlou | Aarhus University | Iran | Agricultural and Biological Sciences | Crop Science, Grain yield, Grain quality | |
| Maryam | Mahmoudzadeh | Tabriz University of Medical sciences | Iran | Agricultural and Biological Sciences | Shelf life estimation | worldtopscientists.com |
| Martina | Torricelli | Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche "Togo Rosati" | Italy | Biochemistry, Genetics and Molecular Biology | Nutrigenomica | worldtopscientists.com |
| Martin | Ostoja-Starzewski | University of Illinois at Urbana-Champaign | United States | Engineering | mechanics | worldtopscientists.com |
| Marta C | Monteiro | Universidade Federal do Pará | Brazil | Pharmacology, Toxicology and Pharmaceutical Science | Saúde, Ciências Farmacêuticas, Produtos naturais | worldtopscientists.com |
| Marta | Kwiatkowska | Military Institute of Medicine | Poland | Medicine and Dentistry | Otolaryngology | worldtopscientists.com |
| Mark | Korang Yeboah | University of Duisburg Essen | Germany | Engineering | Biochemical Engineering | worldtopscientists.com |
| Mariusz | Korkosz | Rzeszow University of Technology | Poland | Engineering | electric machines, electric and hybrid drive, diagnostics of electric machines and drives | worldtopscientists.com |
| Marius | Manole | UMF “Iuliu Hatieganu” Cluj-Napoca | Romania | Dentistry | Biomaterials | worldtopscientists.com |
| Maritza Felisa | Díaz Gómez | Universidad Andres Bello, Escuela de Química y Farmacia | Chile | Chemistry | Ciencias Farmacéuticas, Profesional de la Salud | worldtopscientists.com |
| Mario | Flores | University of Texas at San Antonio | United States | Biochemistry, Genetics and Molecular Biology | Computational Biology | worldtopscientists.com |