Thomas, Thom or Tom Barry may refer to:

• Thomas Barry (English politician) (fl. 1413), MP for Plympton Erle
• Tom Barry (politician) (born 1968), Irish Fine Gael TD for Cork East from 2011

• Tom Barry (baseball) (1879–1946), Major League pitcher with the Philadelphia Phillies
• Thomas A. Barry (c. 1879–1947), American football player and coach
• Tom Barry (rugby league, born 1901) (1901–?), Australian rugby league footballer
• Tom Barry (rugby league, born 1899) (1899–1959), Australian rugby league footballer
• Tom Barry (Cork hurler) (1903–1984), Irish hurler
• Tom Barry (London hurler) (1879–1969), Irish sportsman and revolutionary figure
• Thomas J. Barry (1907–1987), American horse trainer

• Thomas Barry (actor) (1743–1768), Irish stage actor and theatre manager
• Thom Barry (active 1995–2016), American actor and disk jockey
• Thomas Barry (clown) (c. 1810–1857), British circus clown
• Thomas Henry Barry (1855–1919), United States Army Major General
• Tom Barry (screenwriter) (1885–1931), American playwright and screenwriter
• Tom Barry (Irish republican) (1897–1980), Irish Republican Army leader

• Thomas Barrie (died 1538), British almoner
• Thomas de Barry (fl. 1560), canon of Glasgow and chief magistrate of Bothwell