Editing List of biologists (section)

==O==
===Oc–Ok===
*[[Severo Ochoa]] (1905–1993), Spanish and American biochemist, Nobel Prize awarded the Nobel Prize for work on elucidating the [[genetic code]]
*[[Eugene Odum|Eugene P. Odum]] (1913–2002), American ecologist, coauthor of ''Fundamentals of Ecology''
*[[Howard T. Odum]] (1924–2002), American ecologist who pioneered the field of systems ecology
*[[William Ogilby]] (1808–1873), British zoologist<ref>Abbreviation in zoology: Ogilby</ref> concerned with classification and naming of animal species
*[[William Robert Ogilvie-Grant]] (1863–1924), Scottish ornithologist<ref>Abbreviation in zoology: Ogilvie-Grant</ref> who made many collecting trips, including Socotra and Madeira and the Canaries
*[[Sergey Ognev]] (1886–1951), Russian zoologist<ref>Abbreviation in zoology: Ognev</ref> who studied Russian mammals
*[[Alexander George Ogston]] (1911–1996), British biochemist who explained how an achiral substance can have a chiral product in the tricarboxylate cycle
*[[Tomoko Ohta]] (born 1933), Japanese molecular biologist who developed the [[nearly neutral theory of evolution]]
*[[Reiji Okazaki]] (1930–1975), Japanese molecular biologist who discovered [[Okazaki fragments]], important in DNA replication
*[[Tsuneko Okazaki]] (born 1933), Japanese molecular biologist who discovered [[Okazaki fragments]], important in DNA replication
*[[Lorenz Oken]] (1779–1851), German naturalist<ref>Abbreviation in zoology and botany: Oken</ref> who developed a classification of animals

===Ol–Ow===
*[[Giuseppe Olivi]] (1769–1795), Italian naturalist<ref>Abbreviation in zoology and botany: Olivi</ref> who studied the fauna of the seabed
*[[Mark A. O'Neill]] (born 1959), British biologist and computer scientist who has worked on artificial life and biologically inspired computing
*[[Aleksandr Oparin]] (1894–1980), Russian biologist and biochemist, best known for his work on the origin of life
*[[Alcide d'Orbigny]] (1802–1857), French naturalist<ref>Abbreviation in botany: A.D.Orb.</ref> who collected many specimens in South America
*[[George Ord]] (1781–1866), American ornithologist,<ref>Abbreviation in zoology: Ord</ref> author of ''American Ornithology''
*[[Eleanor Anne Ormerod]] (1828–1901), English entomologist who developed agricultural entomology
*[[Edward Latham Ormerod]] (1819–1873), English physician and entomologist, author of ''British Social Wasps ''
*[[Joan Oró]] (1923–2004), Spanish biochemist known for studies of the origin of life
*[[Anders Sandoe Oersted (botanist)|Anders Sandøe Ørsted]] (1816–1872), Danish botanist<ref>Abbreviation in botany: Oerst.</ref> who travelled in Central America and the Caribbean and published papers on the flora
*[[Henry Fairfield Osborn]] (1857–1935), American eugenicist<ref>Abbreviation in zoology: Osborn (also used for [[Herbert Osborn]])</ref> who led many fossil-hunting expeditions to the American Southwest
*[[William Charles Osman Hill]] (1901–1975), British anatomist, primatologist and expert on primate anatomy
*[[Halszka Osmólska]] (1930–2008), Polish [[paleontologist]]<ref>Abbreviation in zoology: Osmólska</ref> specializing in [[dinosaur]]s
*[[Emile Oustalet]] (1844–1905), French zoologist<ref>Abbreviation in zoology: Oustalet</ref> who studied birds in particular
*[[Ray D. Owen]] (1915–2014), American immunologist whose work led to modern immunology and organ transplantation
*[[Richard Owen]] (1804–1892), British biologist,<ref>Abbreviation in zoology: Owen</ref> paleontologist, and taxonomist of fossil and extant organisms