List of Biologists - T

T

• 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