List of Famous people named John

Henry John Heinz III was an American businessman and politician from the Commonwealth of Pennsylvania. A Republican, Heinz served in the United States House of Representatives from 1971 to 1977, and in the United States Senate from 1977 until he was killed in a plane crash in Lower Merion Township, Pennsylvania, in 1991.

John Dudley, 1st Duke of Northumberland was an English general, admiral, and politician, who led the government of the young King Edward VI from 1550 until 1553, and unsuccessfully tried to install Lady Jane Grey on the English throne after the King's death. The son of Edmund Dudley, a minister of Henry VII executed by Henry VIII, John Dudley became the ward of Sir Edward Guildford at the age of seven. Dudley grew up in Guildford's household together with his future wife, Guildford's daughter Jane, with whom he was to have 13 children. Dudley served as Vice-Admiral and Lord Admiral from 1537 until 1547, during which time he set novel standards of navy organisation and was an innovative commander at sea. He also developed a strong interest in overseas exploration. Dudley took part in the 1544 campaigns in Scotland and France and was one of Henry VIII's intimates in the last years of the reign. He was also a leader of the religious reform party at court.

John Howard Gomery was a Canadian jurist.

John Leslie Gainsford was a South African rugby union player. He was born in Germiston. Gainsford played in 71 matches for South Africa, including tour games, and was known for being the most-capped Springbok centre until his record was overtaken by Japie Mulder in 2001.

John Byng, 5th Viscount Torrington, styled for most of his lifetime The Hon. John Byng, was a notable English diarist. His fifteen extant diaries, covering the years 1781–1794, describe his travels on horseback throughout England and Wales during twelve summers. He was a great-uncle of the politician Lord John Russell.