Biyologlar listesi
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Heinrich Moritz Gaede (1795-1834) Alman doğa bilimci ve entomolog.
Johann Christian Gerning (1745-1802) Alman bankacı, sanat koleksiyoncusu ve böcek bilimcisi
Gustav Tornier (1858-1938) Alman zoolog ve herpetolog
Joseph Gaertner (1732–1791), Alman botanikçi
François Gagnepain (1866–1952), Fransız botanikçi
Joseph Paul Gaimard (1796–1858), Fransız
Biruté Galdikas (1946), Canadian primatologist, conducted pioneering studies on orangutans
Robert Gallo (1937), Amerikalı virolog and co-discoverer of HIV
William Gambel (1823–1849), Amerikalı doğabilimci
Prosper Garnot (1794–1838), Fransız doğabilimci
Charles Gaudichaud-Beaupré (1789–1854), Fransız botanikçi
Michael Gazzaniga, Amerikalı cognitive neuroscientist, best known for his research on split-brain patients
Howard Scott Gentry (1903–1993), Amerikalı botanikçi
John Gerard (1545–1611/12), İngiliz botanikçi
Conrad von Gesner (1516–1565), Swiss doğabilimci (abbr. in botany: Gesner)
Luca Ghini (1490–1566), İtalyan botanikçi
Clelia Giacobini (1931–2010), İtalyan microbiyolog, a pioneer of microbiology applied to conservation-restoration
John H. Gillespie, Amerikalı molecular evolutionist and population geneticist
Charles Henry Gimingham (1923), Britanyalı botanikçi
Charles Frédéric Girard (1822–1895), Fransız biyolog, ichthyologist, herpetologist
Johann Friedrich Gmelin (1748–1804), Alman doğabilimci (abbr. in botany: J.F.Gmel.)
Johann Georg Gmelin (1709–1755), Alman doğabilimci (abbr. in botany: J.G.Gmel.)
Samuel Gottlieb Gmelin (1744–1774), Alman botanikçi (abbr. in botany: S.G.Gmel.)
Frederick DuCane Godman (1834–1919), İngiliz doğa bilimci  and ornitolog
Émil Goeldi (1859–1917), Swiss-Brezilyalı doğabilimci and zoolog
Johann Wolfgang von Goethe (1749–1832), known for his literary works but also a scientist. In biology: his theory of plant metamorphosis stipulated that all plant formation stems from a modification of the Leaf.
Camillo Golgi (1843–1926), İtalyan physician and Nobel prize winner, pioneer in neurobiology
Jane Goodall (1934), Britanyalı primatologist, ethologist and anthropologist, best known for conducting a forty-year study of chimpanzee social and family life.
George Gordon (1806–1879), Britanyalı botanikçi
Philip Henry Gosse (1810–1888), İngiliz doğa bilimci
Augustus Addison Gould (1805–1866), Amerikalı conchologist.
John Gould (1804–1881), İngiliz ornitolog
Stephen Jay Gould (1941–2002), Amerikalı paleontologist
Alfred Grandidier (1836–1921), Fransız doğabilimci and explorer
Guillaume Grandidier (1873–1957), Fransız doğabilimci and explorer son of Alfred Grandidier
Temple Grandin (1947), Amerikalı animal scientist; world-renowned as a designer of humane livestock facilities and for her writings on her experience with autism
Chapman Grant (1887–1983), Amerikalı herpetologist
Pierre-Paul Grassé (1895–1985), Fransız zoolog
Asa Gray (1810–1888), Amerikalı botanikçi
George Robert Gray (1808–1872), İngiliz zoolog
J.E. Gray (1800–1875), Britanyalı zoolog
Andrew Jackson Grayson (1819–1869), Amerikalı ornitolog
William King Gregory (1876–1970), Amerikan zoolog
Edward Grey, 1st Viscount Grey of Fallodon (1862–1933), Britanyalı ornitolog
Frederick Griffith (1879–1941), Britanyalı bacteriologist
Jeremy Griffith (1945), Australian zoolog
Jan Frederik Gronovius (1690–1762), Hollandalı botanikçi
Pavel Grošelj (1883–1940), biyolog and belletrist
Félix Édouard Guérin-Méneville (1799–1874), Fransız entomolog
Johann Anton Güldenstädt (1745–1781), Alman doğabilimci
Allvar Gullstrand (1862–1930), Swedish ophthalmologist, winner of the 1911 Nobel Prize for Physiology or Medicine "for research on the image formation by the lens of the eye"
Johann Ernst Gunnerus (1718–1773), Norwegian botanikçi
Albert C. L. G. Günther (1830–1914), British/Alman zoolog