Thomas Allen may refer to:

• Thomas Allen (nonconformist) (1608–1673), Anglican/nonconformist priest in England and New England
• Thomas Allen (dean of Chester) (died 1732)
• Thomas Allen (scholar) (1681–1755), Anglican priest in England
• Thomas Allen (Manx author) (1710–1754), vicar of Maughold Parish and author of Manx carols
• Thomas M. Allen (Missouri clergyman) (1797–1871), minister of the Disciples of Christ church
• Thomas Allen (dean of Achonry) (1873–1927)
• Thomas Allen (chaplain) (1743–1810), American Revolution chaplain

• Thomas S. Allen (1876–1919), American composer
• Sir Thomas Allen (baritone) (born 1944), British baritone singer
• Tom Allen (broadcaster) (born 1961), trombonist and radio broadcaster for the Canadian Broadcasting Corporation

• Thomas Allen (Cavalier) (1603–1681), English MP for Middlesex
• Sir Thomas Allen, 1st Baronet (c. 1633–1690), Lord Mayor of London
• Tom Allen (Maine politician) (born 1945), U.S. representative for Maine
• Thomas Allen (representative) (1813–1882), railroadman and United States congressman from Missouri
• Thomas Allen (Wisconsin politician) (1825–1905), ninth secretary of state of Wisconsin
• Thomas Newton Allen (1839–after 1909), lawyer and author in Kentucky and Washington
• Thomas Carleton Allen (1852–1927), Canadian attorney and mayor of Fredericton
• Thomas R. Allen (born 1965), Chicago alderman
• Thomas M. Allen (Georgia politician), Baptist preacher and representative in the Georgia Assembly
• Thomas Y. Allen (1852–1933), member of the Virginia House of Delegates

• Tom Allen (boxer) (1840–1904), heavyweight boxing champion
• Tom Allen (cricketer) (1912–1954), Australian cricketer
• Tom Allen (hurler) (1874–1952), Irish hurler
• Tommy Allen (footballer, born 1897) (1897–1968), English footballer
• Tom Allen (Australian footballer) (born 1930), former Australian rules footballer
• Thomas Allen (sport shooter) (born 1953), Irish sports shooter
• Tom Allen (American football) (born 1970), American football coach
• Thomas Allen (basketball) (born 1998), American college basketball player

• Thomas Allen (mathematician) (1542–1632), English mathematician
• Sir Thomas Allin, 1st Baronet (1612–1685), officer of the Royal Navy, sometimes known as Thomas Allen
• Thomas Allen (topographer) (1803–1833), English topographer
• Thomas Allen (captain) (1816–1885), South Australian sea captain
• Thomas A. Cullinan (1838–1904), law enforcement officer in Kansas, also known as Tom Allen
• Thomas Allen (Irish Volunteer) (died 1916), member of the Irish Volunteers who fought and died in 1916 Easter Rising in Ireland
• Thomas B. Allen (painter) (1928–2004), illustrator
• Thomas B. Allen (author) (1929–2018), author and historian
• Thomas J. Allen (1931–2020), MIT professor, economist
• Tom Allen (comedian) (born 1983), English comedian
• Thomas D. Allen (fl. 1992), Scout
• Thomas William Allen (1862–1950), English classicist

• Thomas Allen & Son Limited, a Canadian book distributor

• Allen (surname)
• Thomas Allan (mineralogist) (1777–1833), Scottish mineralogist
• Thomas Allan (disambiguation)
• Tommy Allen (disambiguation)
• Thomas Alleyn (disambiguation)
• Thomas Allin (disambiguation)

This disambiguation page lists articles associated with the title Thomas Allen.
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