Biyologlar listesi
H

Ernst Haeckel (1834–1919), Alman physician, zoolog and evolutionist
Hermann August Hagen (1817–1893), Alman entomolog
J. B. S. Haldane (1892–1964), Britanyalı evolutionary biyolog and co-founder of population genetics
William Donald Hamilton (1936–2000), Britanyalı evolutionary biyolog
Sylvanus Charles Thorp Hanley (1819–1899), Britanyalı conchologist and malacologist
Thomas Hardwicke (1755–1835), İngiliz doğa bilimci
Alister Clavering Hardy (1896–1985), İngiliz marine biyolog and pioneer student of the biological basis of religion
Richard Harlan (1796–1843), Amerikalı doğabilimci, zoolog, physicist and paleontologist
Denham Harman (1916), Amerikalı biogerontologist, father of the free radical theory of aging
Maarten 't Hart (1944), Hollandalı biyolog and writer
Ernst Hartert (1859–1933), Alman ornitolog
Gustav Hartlaub (1814–1900), Alman zoolog
Karl Theodor Hartweg (1812–1871), Alman botanikçi
William Henry Harvey (1811–1866), Irish phycologist
Hans Hass (1919), Austrian biyolog
Frederik Hasselquist (1722–1752), Swedish doğabilimci
Arthur Hay, 9th Marquess of Tweeddale (1824–1878), İngiliz ornitolog
James Hector (1834–1907), İskoç geologist, doğabilimci, and surgeon
Charles Hedley (1862–1926), doğabilimci, active in Australia
Oskar Heinroth (1871–1945), Alman biyolog, a founder of ethology
Wilhelm Hemprich (1796–1825), Alman doğabilimci
Willi Hennig (1913–1976) Alman biyolog, founder of cladistics
John Stevens Henslow (1796–1861), İngiliz mineralogist, botanikçi and clergyman
Johann Hermann (1738–1800), Fransız physician and doğabilimci
Albert William Herre (1868–1962), Amerikalı ichthyologist and lichenologist
Alfred Hershey (1908–1997), Amerikalı bacteriologist, winner of the 1969 Nobel Prize in Physiology or Medicine for his work on the genetics of viruses
Philip Hershkovitz (1909–1997), Amerikalı mammalogist noted especially as a primatologist
Leo George Hertlein (1898–1972), Amerikalı paleontologist and malacologist
Archibald Vivian Hill (1886–1977), Britanyalı physiologist, winner of the 1922 Nobel Prize in Physiology or Medicine for elucidation of mechanical work in muscles
Brian Houghton Hodgson (1800–1894), İngiliz doğa bilimci
Jan van der Hoeven (1802–1868), Hollandalı zoolog
Bruno Hofer (1861–1916), Alman fisheries scientist
Johann Centurius Hoffmannsegg (1766–1849), Alman botanikçi, entomolog and ornitolog
Jacques Bernard Hombron (1798–1852), Fransız doğabilimci
Leroy Hood (1939), Amerikalı biochemist, developed high speed automated DNA sequencer
Robert Hooke (1635–1703), Britanyalı natural filozof and Secretary to the Royal Society
Joseph Dalton Hooker (1817–1911), Britanyalı botanikçi, explorer and Director of Kew Botanic Gardens
William Jackson Hooker (1785–1865), Britanyalı botanikçi, Director of Kew Botanic Gardens
John "Jack" Horner (1946), Amerikalı paleontologist, specialized in dinosaurs
Thomas Horsfield (1773–1859), Amerikalı doğabilimci
Bernardo Houssay (1887–1971), Argentine physiologist, winner of the 1947 Nobel Prize in Physiology or Medicine for the function of the pituitary hormones in regulating blood sugar (glucose) in animals.
Martinus Houttuyn (1720–1798), Hollandalı doğabilimci
Albert Howard (1873–1947), Britanyalı botanikçi
Eliot Howard (1873–1940), İngiliz ornitolog
Sarah Blaffer Hrdy (1946), U.S. anthropologist who made contributions to evolutionary psychology and sociobiology
David H. Hubel (1926), Canadian-d. Amerikalı neurobiyolog, winner of the 1981 Nobel Prize in Physiology or Medicine for research on the visual system
François Huber (1750–1831), Swiss doğabilimci
Ambrosius Hubrecht (1853–1915), Hollandalı zoolog
William Henry Hudson (1841–1922), Argentinian-Britanyalı ornitolog
Alexander von Humboldt (1769–1859), Alman doğabilimci and explorer
Allan Octavian Hume (1829–1912), Britanyalı ornitolog
Rob Hume, Britanyalı ornitolog
George Evelyn Hutchinson (1903–1991), Amerikalı ecologist and limnologist
Frederick Wollaston Hutton (1835–1905), İngiliz biyolog and geologist, later worked in Yeni Zelandalı
Julian Sorell Huxley (1887–1975), İngiliz zoolog and contributor to the modern evolutionary synthesis; first D-G of UNESCO
Thomas Henry Huxley (1825–1895), İngiliz zoolog and advocate of evolution, agnosticism and scientific education
Alpheus Hyatt (1838–1902), Amerikalı neo-Lamarckian
Libbie Hyman (1888–1969), invertebrate zoolog
Josef Hyrtl (1810–1894), Austrian anatomist