List of Biologists

Gustav Radde (1831–1903), German naturalist
Thomas Stamford Raffles (1781–1826), British founder/first president of the Zoological Society of London
Constantine Samuel Rafinesque (1783–1840), French naturalist who described many North American species
Émile Louis Ragonot (1843–1895), French entomologist
Santiago Ramón y Cajal (1852–1934), Spanish histologist and Nobel laureate. Considered the father of neuroscience.
Edward Pierson Ramsay (1842–1916), Australian ornithologist
Austin L. Rand (1905–1982), Canadian zoologist
Suresh Rattan (born 1955), Indian biogerontologist
John Ray (1627–1705), English naturalist
Francesco Redi (1626–1697), Italian physician known for his experiment in 1668 which is regarded as a one of the first steps in refuting abiogenesis
Lovell Augustus Reeve (1814–1865), English conchologist
Heinrich Gustav Reichenbach (1823–1889), German orchidologist (abbr. in botany: Rchb. f.)
Ludwig Reichenbach (1793–1879), German botanist and ornithologist (abbr. in botany: Rchb.)
Anton Reichenow (1847–1941), German ornithologist
Caspar Georg Carl Reinwardt (1773–1854), Dutch botanist
Bernhard Rensch (1900–1990), German biologist
Ralf Reski (born 1958), German botanist and biotechnologist, developed Physcomitrella as model organism
Achille Richard (1794–1852), French botanist (abbr. in botany: A. Rich)
Jean Michel Claude Richard (1787–1868), noted French botanist and plant collector (abbr. in botany: J.M.C.Rich.)
Louis Claude Richard (1754–1821), French botanist (abbr. in botany: Rich.)
Olivier Jules Richard (1836–1896), French lichenologist (abbr. in botany: O.J.Rich.)
John Richardson (1787–1865), Scottish naturalist (abbr. in botany: Richardson)
Charles Richet (1850–1935), French physiologist, winner of the 1913 Nobel Prize for Physiology or Medicine for his discovery of anaphylaxis
Charles Wallace Richmond (1868–1932), American ornithologist
Robert Ridgway (1850–1929), American ornithologist
Henry Nicholas Ridley (1855–1956), British botanist (abbr. in botany: Ridl.)
Austin Roberts (1883–1948), South African zoologist
Harold E. Robinson (born 1932), American botanist and entomologist
Maurício Rocha e Silva (1910–1983), Brazilian physician and pharmacologist, codiscoverer of bradykinin
Martin Rodbell (1925–1998), biologist
Peter Friedrich Röding (1767–1846), German malacologist
George Romanes (1848–1894), Canadian naturalist, founded the discipline of comparative psychology
Alfred Romer (1894–1973), specialist in vertebrate paleontology
Robert Rosen (1934–1998), theoretical biologist
Joel Rosenbaum, cell biologist at Yale University
Harald Rosenthal (born 1937), German hydrobiologist known for his work in fish farming and ecology
Miriam Louisa Rothschild (1908–2005), British entomologist
Walter Rothschild, 2nd Baron Rothschild (1868–1937), British zoologist
William Roxburgh (1759–1815), Scottish botanist
Adriaan van Royen (1704–1779), Dutch botanist (abbr. in botany: Royen)
Karl Rudolphi (1771–1832), German physiologist
Eduard Rüppell (1794–1884), German naturalist