Thomas, Tom or Tommy Callaghan may refer to:

• Tommy Callaghan (footballer, born 1886) (1886–1917), English footballer
• Tom Callaghan (active 1925–33), Scottish footballer who played for Scottish, Irish and English Football Leagues
• Thomas Patrick Callaghan (born 1938), Irish long-distance runner
• Tommy Callaghan (born 1945), Scottish footballer who played for Celtic, Dunfermline Athletic, and Clydebank
• Thomas Callaghan (judge) (1815–1863), Australian judge of the District Court of New South Wales
• Thomas Callaghan, an alias of burglar and author Jack Black (1871–1932)

See also[edit]

• Thomas O'Callaghan (1845–1931), Australian police officer
• Tom Callahan (1921–1996), American basketball player