John Baldwin may refer to:

Military

• Jack Baldwin (RAF officer) (John Eustice Arthur Baldwin, 1892–1975), senior British Royal Air Force officer
• John Robert Baldwin (1918–1952), RAF fighter ace of the Second World War
• John A. Baldwin Jr. (born 1933), American admiral

Politics and government

• Sir John Baldwin (judge) (died 1545), Chief Justice of the Common Pleas, 1535–1545
• John Baldwin (congressman) (1772–1850), U.S. Representative from Connecticut
• John Brown Baldwin (1820–1873), Politician in Virginia during the American Civil War
• John Denison Baldwin (1809–1883), U.S. Representative from Massachusetts and writer on anthropology
• John Harvey Baldwin (1851–1924), American lawyer and politician
• John Baldwin (Missouri politician) (1843–1934), Missouri senator
• John F. Baldwin Jr. (1915–1966), U.S. Representative from California
• John Baldwin (MP) (died 1691), English politician
• John R. Baldwin (1854–1897), Massachusetts politician
• J. B. Munro (born John Munro, 1936–2018), New Zealand politician

Sports

• John Baldwin Sr. (active 1972), American figure skater
• John Baldwin (boxer) (born 1949), American boxer
• John Baldwin (figure skater) (born 1973), American pairs figure skater with Rena Inoue

Other people

• John Baldwin (educator) (1799–1884), founder of Baldwin-Wallace College, Baker University, Baldwin Boys High School and Baldwin Girls High School
• John Baldwin (trade unionist) (1923–2007), British trade unionist
• John Paul Jones (musician) (John Baldwin, born 1946), bassist and keyboard player for Led Zeppelin
• John C. Baldwin (1948–2016), American cardiac surgeon and academic administrator
• John E. Baldwin (1931–2010), British astronomer
• John Loraine Baldwin (1809–1896), author on the games of whist and badminton
• John Thomas Baldwin (1910–1974), American botanist
• John W. Baldwin (1929–2015), historian, specialist of Philip II of France

See also

• Jack Baldwin (disambiguation)
• Baldwin (name)