– Alexander von Middendorff (1815–1894)* Midgley – Steven Hamar Midgley* Miles – Clifford Miles* Miller – Gerrit Smith Miller (1869–1956) mammals* A.H.Miller – Alden H. Miller* J.F.Miller – John Frederick Miller (1759–1796) mainly vertebrates* L.H.Miller – Loye H. Miller paleontology, mainly birds* R.R.Miller – Robert Rush Miller (1916–2003) fish* Millet – Pierre-Aimé Millet (1783–1873)* Milne-Edwards – هنري ميلن إدواردس (1800–1885): الثدييات القشريات* A.Milne-Edwards – ألفونس ميلن إدواردس (1835–1900): الطيور* Milner – Angela C. Milner* Miranda-Ribeiro – Alípio de Miranda Ribeiro (1874–1939)* P.Miranda-Ribeiro – Paulo de Miranda Ribeiro (1901–1965)* Mitchell – Thomas Mitchell (explorer) (1792–1855)* Mitchill – Samuel Latham Mitchill (1764–1831)fish use if we get another "Mitchill" -->* Mitra – Tridib Ranjan Mitra* Mizuno – Nobuhiko Mizuno* Mochizuki – Kenji Mochizuki* Mocsáry – Alexander Mocsáry (1841–1915)* Mohr – Erna Mohr (1894–1968)* Molina – Juan Ignacio Molina (1740–1829)* Molnar – Ralph E. Molnar* Mondolfi – Edgardo Mondolfi (1918–1999)* Montagu – George Montagu (1753–1815)* Moore – Frederic Moore (1830–1907) butterflies and moths* J.C.Moore – Joseph Curtis Moore (1914–1995) rodents* Mori – Tamezo Mori (d.1940)* Moreno – Perito Francisco Moreno (1852–1919)* Morley – Claude Morley (1874–1951)* Morrow – James Edwin Morrow, Jr. (b.1918)* Mortensen – Ole Theodor Jensen Mortensen (1868–1952)* Möschler – Heinrich Benno Möschler (1831-1888)* Motschulsky – Victor Ivanovitsch Motschulsky (1810–1871)* Mourer-Chauviré – Cécile Mourer-Chauviré* Moyer – Jack T. Moyer (1929–2004)* Muche – Werner Heinz Muche (1911–1987)* Müller – Johannes Peter Müller (1801–1858) mainly fish* O.F.Müller – Otto Friedrich Müller (1730–1784) insects, fauna of Scandinavia* S.Müller – Salomon Müller (1804–1864) mainly fauna of Indonesia* Mulsant – Étienne Mulsant (1797–1880)* Munday – Philip L. Munday* Murphy – Robert Cushman Murphy (1887–1973)* Murray – J.
– Alexander von Middendorff (1815–1894)* Midgley – Steven Hamar Midgley* Miles – Clifford Miles* Miller – Gerrit Smith Miller (1869–1956) mammals* A.H.Miller – Alden H. Miller* J.F.Miller – John Frederick Miller (1759–1796) mainly vertebrates* L.H.Miller – Loye H. Miller paleontology, mainly birds* R.R.Miller – Robert Rush Miller (1916–2003) fish* Millet – Pierre-Aimé Millet (1783–1873)* Milne-Edwards – Henri Milne-Edwards (1800–1885) mammals and crustaceans* A.Milne-Edwards – Alphonse Milne-Edwards (1835–1900) birds* Milner – Angela C. Milner* Miranda-Ribeiro – Alípio de Miranda-Ribeiro (1874–1939)* P.Miranda-Ribeiro – Paulo de Miranda Ribeiro (1901–1965)* Mitchell – Thomas Mitchell (explorer) (1792–1855)* Mitchill – Samuel Latham Mitchill (1764–1831)fish use if we get another "Mitchill" -->* Mitra – Tridib Ranjan Mitra* Mizuno – Nobuhiko Mizuno* Mochizuki – Kenji Mochizuki* Mocsáry – Alexander Mocsáry (1841–1915)* Mohr – Erna Mohr (1894–1968)* Molina – Juan Ignacio Molina (1740–1829)* Molnar – Ralph E. Molnar* Mondolfi – Edgardo Mondolfi (1918–1999)* Montagu – George Montagu (1753–1815)* Moore – Frederic Moore (1830–1907) butterflies and moths* J.C.Moore – Joseph Curtis Moore (1914–1995) rodents* Mori – Tamezo Mori (died 1940)* Moreno – Perito Francisco Moreno (1852–1919)* Morley – Claude Morley (1874–1951)* Morrow – James Edwin Morrow, Jr. (born 1918)* Mortensen – Ole Theodor Jensen Mortensen (1868–1952)* Möschler – Heinrich Benno Möschler (1831–1888)* Motomura – Hiro Motomura fish, Scorpionfish* Motschulsky – Victor Ivanovitsch Motschulsky (1810–1871)* Mourer-Chauviré – Cécile Mourer-Chauviré* Moyer – Jack T. Moyer (1929–2004)* Muche – Werner Heinz Muche (1911–1987)* J.P.Müller, Müller – Johannes Peter Müller (1801–1858) mainly fish* O.F.Müller – Otto Friedrich Müller (1730–1784) insects, fauna of Scandinavia* Statius Müller, or P.L.S.