Thomas Martyn (1735–1825) was an English botanist.
Thomas Martyn may also refer to:
Thomas J. C. Martyn (1896–1979), British aviator, journalist, founder of American magazine Newsweek Thomas Martyn (zoologist) (c. 1760–1816), English zoologist, conchologist and entomologist Tommy Martyn (born 1971), rugby league footballer who played in the 1980s, 1990s and 2000s, and coached in the 2000s Thomas Martyn (rugby league) (1946/47–2016), rugby league footballer who played in the 1970s Thomas Óge Martyn (died 1577), mayor of Galway
See also Thomas Martin (disambiguation) Thomas Marten (disambiguation)