John Caldwell
John Caldwell may refer to:
- John Caldwell (cartoonist), American cartoonist
- John Caldwell (boxer) (1938–2009), Irish Olympian, bronze medal in 1956 Olympics
- John Caldwell (Kentucky politician) (1757–1804), Lieutenant Governor of Kentucky, 1804
- John Caldwell (seigneur) (1775–1842), Early Quebec seigneur and politician
- John Caldwell (demographer) (born 1928), Australian demographer and member of the Order of Australia
- John Caldwell (Irish soldier), 18th-century officer in the British 8th Regiment of Foot
- John Caldwell (musicologist) (born 1938) British composer and Oxford University academic
- John Caldwell (Texas politician), Texas state senator, 1855–1859
- John A. Caldwell (1852–1927), U.S. Representative from Ohio
- John C. Caldwell (1833–1912), General in the U.S. Army during the Civil War
- John H. Caldwell (born 1928), American Nordic skier and author
- John Lawrence Caldwell (1875-1922), American ambassador to Iran
- John Henry Caldwell (1826–1902), U.S. Representative from Alabama
- John Tyler Caldwell (1912–1995), Chancellor of North Carolina State University
- John W. Caldwell (1837–1903), U.S. Representative from Kentucky
- John Caldwell (Michigan politician) (1849–1916), Michigan state representative (1897–1900)