John Mason may refer to:

• John Mason (playwright) (fl. 1609), British playwright
• John Mason (poet) (1646–1694), English clergyman, poet, and hymn-writer
• John B. Mason (1858–1919), American stage actor
• John Mason (artist) (1927–2019), American ceramic artist
• Ralph Mason (John Francis Mason, 1938–2016), English tenor
• John M. Mason (musician) (1940–2011), Scottish solicitor, musician, composer and conductor

• John Mason (planter) (1766–1849), American banker and planter, son of George Mason
• John Mason (businessman) (1773–1839), American banker
• John Charles Mason (1798–1881), British East India Company secretary and diplomat
• John Landis Mason (1832–1902), American tinsmith; patented glass-threaded mason jars for food preservation

• Sir John Mason (died 1720), Irish MP for County Waterford
• John Mason (died 1738), Irish MP for the city of Waterford
• John Monck Mason (1726–1809), Irish politician and literary scholar

• John Mason (15th-century MP), Member of Parliament for Lewes and East Grinstead
• John Mason (diplomat) (1503–1566), British diplomat and spy
• John Mason (governor) (1586–1635), founder of the Province of New Hampshire and governor of Newfoundland
• John Mason (British diplomat) (1927–2008), UK High Commissioner to Australia
• John Mason (Scottish politician) (born 1957), Member of Parliament for Glasgow East and Member of the Scottish Parliament for Glasgow Shettleston

• John Thomson Mason (1765–1824), American jurist and Attorney General of Maryland in 1806
• John Thomson Mason (1787–1850), American lawyer, United States marshal
• John Y. Mason (1799–1859), U.S. Representative from Virginia and Secretary of the Navy
• John Calvin Mason (1802–1865), U.S. Representative from Kentucky
• John Thomson Mason Jr. (1815–1873), U.S. Representative from Maryland, son of John Thomson Mason (1765–1824)
• John E. Mason (1854–1910), American politician and judge from Virginia

• John James Mason (1842–1903), Canadian politician
• John Mason (New Zealand politician) (1880–1975), New Zealand politician
• John Mason (Australian politician) (born 1928), member of the New South Wales Legislative Assembly

• John Mason (c. 1600–1672) (1600–1672), Commander of the Connecticut forces in the 1637 Pequot War
• John Mason (master) (fl. 1780s), master of the Prince of Wales in the First Fleet
• John S. Mason (1824–1897), Union general in the American Civil War

• John Alden Mason (1885–1967), American archaeological anthropologist and linguist
• John Mason (meteorologist) (1923–2015), British meteorologist
• John Wayne Mason (1924–2014), American physiologist and stress researcher

• Jack Mason (John Richard Mason, 1874–1958), English cricketer
• John Mason (American football) (fl. 1920s–1950s), American college football player and coach
• John Mason (soccer) (born 1953), Scottish-American soccer defender
• John Mason (cricketer) (born 1984), English cricketer
• John Mason (runner) (born 1987), Canadian long-distance runner
• John Mason (announcer), American sports announcer

• John Mason (minister) (1706–1763), English nonconformist minister and author
• John M. Mason (theologian) (1770–1829), American preacher and theologian
• John Mason (outlaw) (died 1866), American bushwhacker and bandit
• John Mason (historian) (1920–2009), British historian and Oxford academic
• John Mason (schoolmaster) (born 1945), Indian educationist

• John Mason School, a secondary school in Abingdon, UK
• 6092 Johnmason, minor planet named for the British astronomer John Mason

• Mason (surname)
• John Thomson Mason (disambiguation)
• Jonathan Mason (disambiguation)