List of Biologists

Wladyslaw Taczanowski (1819–1890), Polish zoologist
Armen Takhtajan (born 1910), Russian botanist
Peter Gustaf Tengmalm (1754–1803), Swedish naturalist
Coenraad Jacob Temminck (1778–1858), Dutch zoologist
Theophrastus (372 BC – 287 BC), biologist and the successor of Aristotle in the Peripatetic school, popularizer of science
Johannes Thiele (1860–1935), German zoologist and malacologist
Michael Rogers Oldfield Thomas (1858–1929), British zoologist
William Thompson (1805–1852), Irish ornithologist and naturalist
Louis-Marie Aubert du Petit-Thouars (1758–1831), French botanist
Carl Peter Thunberg (1743–1828), Swedish naturalist
Samuel Tickell (1811–1875), British ornithologist
Niko Tinbergen (1907–1988), Dutch ethologist
Agostino Todaro (1818–1892), Italian botanist
Susumu Tonegawa (born 1939), Japanese biologist, winner of the 1987 Nobel Prize in Physiology or Medicine for "discovery of the genetic principle for generation of antibody diversity"
John Torrey (1796–1873), American botanist, first professional in New World
Joseph Pitton de Tournefort (1656–1708), French botanist
John Kirk Townsend (1809–1851), American ornithologist
Thomas Stewart Traill (1781–1862), Scottish doctor and naturalist
Abraham Trembley (1710–1784), Swiss naturalist
Melchior Treub (1851–1910), Dutch botanist
Henry Baker Tristram (1822–1906), English ornithologist
Robert Trivers (born 1943), evolutionary biologist
Édouard Louis Trouessart (1842–1927), French naturalist
Frederick W. True (1858–1914), American naturalist
George Washington Tryon Jr. (1838–1888), American malacologist
Bernard Tucker (1901–1950), English ornithologist
Edward Tuckerman (1817–1886), American botanist
Endel Tulving (born 1927), Estonian-born Canadian neuroscientist, specializes in episodic memory
Marmaduke Tunstall (1743–1790), English ornithologist
Ruth Turner (1915–2000), marine biologist
William Turton (1762–1835), British naturalist