John Adams (1735–1826) was the second president of the United States.

John Adams may also refer to:

• John Adams Sr. (1691–1761), father and grandfather, respectively, of two U.S. presidents
• John Quincy Adams (1767–1848), sixth president of the United States and son of President John Adams
• John Adams II (1803–1834), son of President John Quincy Adams and grandson of President John Adams
• John Quincy Adams II (1833–1894), American politician and grandson of President John Quincy Adams
• John Quincy Adams (1848–1919), land and townsite agent for Milwaukee Railroad

• John Adams (Master of Sidney Sussex College, Cambridge) (died 1746), Master of Sidney Sussex 1730–1746
• John Adams (educational writer) (1750?–1814), Scottish compiler of books for young readers
• John Adams (educationist) (1857–1934), Scottish educator and Principal of the Institute of Education
• John Cranford Adams (1903–1986), American educator and president of Hofstra University
• John Adams (geographer) (born 1938), English professor of geography and theorist on risk compensation

• John Adams (poet) (1704–1740), only son of the Nova Scotian merchant John Adams
• John Turvill Adams (1805–1882), American novelist
• John "Grizzly" Adams (1812–1860), American mountain man and animal trainer
• John Clayton Adams (1840–1906), English landscape artist
• John Wolcott Adams (1874–1925), American illustrator
• John Quincy Adams (painter) (1874–1933), Austrian genre and portrait painter
• Jon Adams (musician) (born 1939), American folk musician
• John Adams (composer) (born 1947), American composer of classical music and opera
• John Clement Adams (born 1947), American composer and educator
• John Luther Adams (born 1953), American composer whose music is inspired by nature
• John Joseph Adams (born 1976), American science fiction and fantasy fiction editor
• John L. Adams (born 1973), American actor, comedian and director

• John Hicks Adams (1820–1878), Deputy U.S. Marshal for the Arizona Territory 1878
• John Jay Adams (1860–1926), American lawyer and judge
• John R. Adams (born 1955), U.S. federal judge
• John Donley Adams (born 1973), American lawyer and candidate for Attorney General of Virginia
• J. Christian Adams (born 1968), American attorney and conservative activist

• John Worthington Adams (1764–1837), British general in India
• John Giles Adams (1792–1832), U.S. commander at the Battle of Stillman's Run during the 1832 Black Hawk War
• John Adams (Confederate Army officer) (1825–1864), US Army officer
• John G. B. Adams (1841–1900), Civil War Medal of Honor recipient
• John Mapes Adams (1871–1921), Boxer Rebellion Medal of Honor recipient
• John Adams (Royal Navy officer) (1918–2008), British rear admiral
• John G. Adams (1932–2003), Army counsel in the Army-McCarthy hearings
• John Adams (Canadian general) (born 1942), Canadian military leader

• John Adams (Protestant martyr) (died 1546), burnt to death
• John Adams (Catholic martyr) (c. 1543–1586), English Catholic priest who was hanged, drawn, and quartered
• John Adams (Provost of King's College, Cambridge) (1662–1720), British Anglican priest
• John Adams (minister) (c. 1704–1757), Scottish minister and moderator of the General Assembly of the Church of Scotland
• John Adams (educator) (1772–1863), educator who organized several hundred Sunday schools
• John Greenleaf Adams (1810–1897), editor of religious texts
• John Adams (educational writer) (c. 1750–1814), Scottish minister and author of school texts
• John Hurst Adams (1927–2018), American civil rights activist and Bishop in the African Methodist Episcopal Church
• John Adams (bishop) (born 1963), New Zealand Roman Catholic bishop

• John Adams (physicist) (1920–1984), British accelerator physicist
• John Couch Adams (1819–1892), British mathematician and astronomer
• John Franklin Adams (1843–1912), British amateur astronomer and author of stellar maps
• John Stacey Adams, behavioral psychologist known for equity theory

• John Adams (cartographer) (c.1643–1690), produced a map of England and Wales
• John Adams (mutineer) (1767–1829), aboard HMS Bounty
• John Adams (glassmaker) (1823–1886), pioneer glass manufacturer
• John Bodkin Adams (1899–1983), British physician and suspected serial killer
• John Frank Adams (1930–1989), British mathematician
• John H. Adams (environmentalist) (born 1936), founding director and trustee of the Natural Resources Defense Council
• John Till Adams (1748–1786), English Quaker physician
• John Adams (shoemaker) (1745–1849), American shoemaker, veteran and centenarian

• Johnadams, a minor planet
• John Adams, California, the former name of Centerville, California, US
• USS John Adams, several US Navy ships
• John Quincy Adams (train), of the New York, New Haven & Hartford Railroad
• John Adams Institute for Accelerator Science, a UK physics research institute named for the physicist John Adams
• John Adams Institute (Netherlands) (Stichting John Adams Instituut), a 1987 American cultural promotion organization

• Jonathan Adams (disambiguation)
• John Adam (disambiguation)
• Jack Adams (disambiguation)
• John Bertram Adams (disambiguation)

This disambiguation page lists articles associated with the title John Adams.
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