John Caldwell may refer to:
Arts and entertainment John Caldwell (cartoonist) (1946–2016), American cartoonist John Caldwell (musicologist) (born 1938), British composer and Oxford University academic
Military Capt. John Caldwell, Revolutionary war soldier, died 1777; see Delaware Blue Hen John C. Caldwell (1833–1912), General in the U.S. Army during the Civil War John Frederick Caldwell (1801–1873), Marshal in the Imperial Brazilian Army, born in Portugal to an Irish father
Politics John Caldwell (Kentucky politician) (1757–1804), Lieutenant Governor of Kentucky, 1804 John Caldwell (Michigan politician) (1849–1916), Michigan state representative, 1897–1900 John Caldwell (New South Wales politician) (1817–1884), New South Wales colonial politician John Caldwell (Western Australian politician) (1934–2000), Western Australian state politician John Caldwell (Mississippi politician), Mississippi Transportation Commissioner John Caldwell (seigneur) (1775–1842), Early Quebec seigneur and politician
John A. Caldwell (1852–1927), U.S. Representative from Ohio John Henry Caldwell (1826–1902), U.S. Representative from Alabama John Lawrence Caldwell (1875–1922), American ambassador to Iran John Taylor Caldwell (1911–2007), Glasgow-born anarchist communist and biographer of Guy Aldred John W. Caldwell (1837–1903), U.S. Representative from Kentucky
Sport John Caldwell (boxer) (1938–2009), Irish Olympian, bronze medal in 1956 Olympics John H. Caldwell (1928–2026), American Nordic skier, coach and author Jock Caldwell (John Caldwell, 1874–?), Scottish footballer
Others John Caldwell (demographer) (1928–2016), Australian demographer and member of the Order of Australia John Tyler Caldwell (1911–1995), Chancellor of North Carolina State University John Isaiah Caldwell (c. 1828–?), American attorney, miner, businessman, and school trustee John E. Caldwell (born c. 1950), chair of the board of Advanced Micro Devices, Inc. John K. Caldwell (1881–1982), American diplomat John Caldwell, real name of John Fenwick (Jesuit) (1628–1679), English Jesuit John Caldwell (born 1974 or 1975), Northern Irish police officer who was shot in 2023; see shooting of John Caldwell