Editing List of biologists (section)

==R==
===Ra===
*[[George Radda]] (born 1936), Hungarian chemist, known for molecular imaging of heart metabolism
*[[Gustav Radde]] (1831–1903), German naturalist<ref>Abbreviation in zoology and botany: Radde</ref> and explorer whose work encompassed birds, amphibians, reptiles, lizards, snakes and insects
*[[Thomas Stamford Raffles]] (1781–1826), British biologist<ref>Abbreviation in zoology: Raffles</ref> who studied mammals, fish, birds and insects
*[[Constantine Samuel Rafinesque]] (1783–1840), French zoologist and botanist<ref>Abbreviation in zoology: Rafinesque; abbreviation in botany: Raf.</ref> who described many North American species
*[[Émile Louis Ragonot]] (1843–1895), French entomologist who named many genera of butterflies and moths
*[[V S Rama Das|Rama Das V.S.]] (1933–2010), Indian botanist who studied photosynthesis.
*[[Santiago Ramón y Cajal]] (1852–1934), Spanish histologist awarded the Nobel prize for work on neuroanatomy and the central nervous system
*[[Edward Pierson Ramsay]] (1842–1916), Australian ornithologist,<ref>Abbreviations in zoology: Ramsay, E.P. Ramsay</ref> author of ''Catalogue of the Australian Birds in the Australian Museum at Sydney''
*[[Austin L. Rand]] (1905–1982), Canadian zoologist<ref>Abbreviation in zoology: Rand</ref> who studied birds of Madagascar and New Guinea
*[[Suresh Rattan]] (born 1955), Indian biogerontologist who has formulated the concepts of essential lifespan and virtual gerontogenes
*[[John Ray]] (1627–1705), English naturalist<ref>Abbreviation in botany: Ray</ref> whose classification of plants ''Historia Plantarum'' was a step towards modern taxonomy

===Re===
*[[Francesco Redi]] (1626–1697), Italian physician known for his experiment in 1668 which is regarded as one of the first steps in refuting [[abiogenesis]]
*[[Lovell Augustus Reeve]] (1814–1865), English conchologist, author of many publications on mollusc shells
*[[Heinrich Gustav Reichenbach]] (1823–1889), German orchidologist,<ref>Abbreviation in botany: Rchb. f.</ref> the world's leading authority on orchids
*[[Ludwig Reichenbach]] (1793–1879), German botanist<ref>Abbreviation in zoology: Reichenbach; abbreviation in botany: Rchb.</ref> and ornithologist who introduced the idea of displaying invertebrate creatures as glass models
*[[Anton Reichenow]] (1847–1941), German ornithologist<ref>Abbreviation in zoology: Reichenow</ref> known for classifying birds in six groups
*[[Caspar Georg Carl Reinwardt]] (1773–1854), Dutch botanist who studied amphibians and reptiles as well as plants
*[[Bernhard Rensch]] (1900–1990), German evolutionary biologist who searched for universal rules, such as Allen's Rule, Gloger's Rule and Rensch's rule
*[[Ralf Reski]] (born 1958), German botanist and biotechnologist who developed [[Physcomitrella]] as model organism

===Ri===
*[[Achille Richard]]  (1794–1852), French botanist<ref>Abbreviation in botany: A. Rich</ref> who studied and described several genera of orchids 
*[[Jean Michel Claude Richard]] (1787–1868), French botanist<ref>Abbreviation in botany: J.M.C.Rich.</ref> and plant collector
*[[Louis Claude Richard]] (1754–1821), French botanist<ref>Abbreviation in botany: Rich.</ref> who collected botanical specimens in the Caribbean region
*[[Olivier Jules Richard]] (1836–1896), French lichenologist<ref>Abbreviation in botany: O.J.Rich.</ref> who worked on the anatomy and symbiosis of lichens.
*[[John Richardson (naturalist)|John Richardson]] (1787–1865), Scottish naturalist<ref>Abbreviation in zoology and in botany: Richardson</ref> who explored the Arctic region
*[[Charles Richet]] (1850–1935), French physiologist awarded the Nobel Prize for his discovery of anaphylaxis
*[[Charles Wallace Richmond]] (1868–1932), American ornithologist,<ref>Abbreviation in zoology: Richmond (also used for Neil D. Richmond)</ref> compiler of the ''Richmond Index'' of Latin names of birds 
*[[Robert Ridgway]] (1850–1929), American ornithologist,<ref>Abbreviation in zoology: Ridgway</ref> author of ''The Birds of North and Middle America''
*[[Henry Nicholas Ridley]] (1855–1956), British botanist<ref>Abbreviation in botany: Ridl.</ref> who promoted rubber as a commercial product
*[[Christina Riesselman]] (thesis 2011), American paleoceanographer whose research focus is on Southern Ocean response to changing climate

===Ro–Ru===
*[[Austin Roberts (zoologist)|Austin Roberts]] (1883–1948), South African zoologist,<ref>Abbreviation in zoology: Roberts</ref> posthumous author of ''The mammals of South Africa''
*[[Harold E. Robinson]] (1932–2020), American botanist<ref>Abbreviation in botany: H.Rob.</ref> and entomologist who worked on sunflowers and the bryophytes
*[[Maurício Rocha e Silva]] (1910–1983), Brazilian physician and pharmacologist, codiscoverer of bradykinin
*[[Martin Rodbell]] (1925–1998), American biochemist and molecular endocrinologist awarded the Nobel Prize for work on signal transduction in cells
*[[George Romanes]] (1848–1894), Scottish-Canadian evolutionary biologist and physiologist who laid the foundation of comparative psychology
*[[Alfred Romer]] (1894–1973), American paleontologist whose textbook ''Vertebrate Paleontology'' laid the foundation for classifying  vertebrates
*[[Robert Rosen (theoretical biologist)|Robert Rosen]] (1934–1998), American theoretical biologist who studied the defining principles of life
*[[Joel Rosenbaum]] (born 1933), American cell biologist who studies cilia and flagella in the model species ''Chlamydomonas''
*[[Harald Rosenthal]] (born 1937), German hydrobiologist known for his work in fish farming and ecology
*[[Miriam Louisa Rothschild]] (1908–2005), British entomologist, an authority on fleas, and the first person to work out the flea's jumping mechanism
*[[Walter Rothschild, 2nd Baron Rothschild|Walter Rothschild]] (1868–1937), British zoologist<ref>Abbreviation in zoology: Rothschild</ref> interested in the taxonomy of birds and butterflies
*[[Joan Roughgarden]] (born 1946), American ecologist, evolutionary biologist and philosopher of science
*[[Michael Rout]] (living), molecular and cellular biologist
*[[William Roxburgh]] (1759–1815), Scottish botanist<ref>Abbreviation in botany: Roxb.</ref> who studied sugarcane, indigo and sago
*[[Adriaan van Royen]] (1704–1779), Dutch botanist<ref>Abbreviation in botany: Royen</ref> known for work on the flora of Southeast Asia
*[[Karl Rudolphi]] (1771–1832), Swedish-German physiologist<ref>Abbreviation in zoology: Rudolphi</ref> regarded as the father of helminthology
*[[Eduard Rüppell]] (1794–1884), German naturalist<ref>Abbreviation in zoology: Rüppell</ref> and explorer, the first naturalist to traverse Ethiopia