List of Biologists

Henri Laborit (1914–1995), French surgeon and physiologist
Bernard Germain Étienne de la Ville, Comte de Lacépède (1756–1825), French naturalist
David Lack (1910–1973), British ornithologist
Frédéric de Lafresnaye (1783–1861), French ornithologist
Jean-Baptiste Lamarck (1744–1829), French evolutionist, coined many terms like biology and fossils
Aylmer Bourke Lambert (1761–1842), British botanist
Charles Lamberton (fl. 1912–1956), French paleontologist
Hugh Lamprey (1928–1996), British ecologist
Kai Larsen (born 1926), Danish botanist
Charles Francis Laseron (1887–1959), American-born Australian naturalist and malacologist
John Latham (1740–1837), English naturalist
Pierre André Latreille (1762–1833), French entomologist
Charles Louis Alphonse Laveran (1845–1922), French physician, winner of the 1907 Nobel Prize in Physiology or Medicine for his discovery that the cause of malaria is a protozoon
George Newbold Lawrence (1806–1855), American ornithologist
William Elford Leach (1790–1836), English zoologist and marine biologist
Colin Leakey (born 1933), British tropical botanist and specialist in bean science
Joseph LeConte (1823–1901), physiologist
Tim Lee (born 1977), comedian
Antoni van Leeuwenhoek (1632–1723), Dutch biologist, developer of the microscope
François Leguat (c. 1637 – 1735), French naturalist
Joseph Leidy (1823–1891), American paleontologist
Johann Philipp Achilles Leisler (1771–1813), Dutch naturalist
Juan Lembeye (1816–1889), Spanish naturalist
Leonardo Da Vinci (1452–1519), known as an artist but also an anatomist. Dissected hundreds of specimens and drew exact copies of them
Jean Baptiste Leschenault de la Tour (1773–1826), French botanist
Rene Primevere Lesson (1794–1849), French naturalist
Charles Alexandre Lesueur (1778–1846), French naturalist
François Le Vaillant (1753–1824), French ornithologist
Richard Lewontin (born 1929), biologist
Wen-Hsiung Li, molecular evolutionary biologist
Emmanuel Liais (1826–1900), French botanist
Martin Lichtenstein (1780–1867), German zoologist
John Lightfoot (1735–1788), English conchologist and botanist
David R. Lindberg, American malacologist and biologist
Aristid Lindenmayer (1925–1989), Hungarian biologist
John Lindley (1799–1865), English botanist
Heinrich Friedrich Link (1767–1850), German botanist (abbr. in botany: Link)
Carolus Linnaeus (1707–1778), Swedish botanist; father of the binomial nomenclature system (abbr L. or Linn.)
Jacques Loeb (1859–1924), German-American biologist
Friedrich Loeffler (1852–1915), German biologist
Konrad Lorenz (1903–1989), Austrian founder of ethology
Harri Lorenzi (born 1949), Brazilian botanist
John Claudius Loudon (1783–1843), English botanist
James Lovelock (born 1919), English chemist and father of the Gaia hypothesis
Percy Lowe (1870–1948), English ornithologist
Peter Wilhelm Lund (1801–1880), Danish zoologist and paleontologist
Salvador Luria (1912–1991), microbiologist, Nobel prize winner
Adolfo Lutz (1855–1940), Brazilian infectologist, pathologist and public health researcher
André Lwoff (1902–1994), French microbiologist, winner of the 1965 Nobel Prize in Physiology or Medicine
Richard Lydekker (1849–1915), English naturalist
Trofim Lysenko (1898–1976), Soviet biologist and agronomist. His denouncement of genetics became known as Lysenkoism.