John Knox (c. 1514–1572) was a Scottish minister, theologian, and writer.
John Knox may also refer to:
Law John C. Knox (Pennsylvania judge) (1817–1880), lawyer and state judge John C. Knox (New York judge) (1881–1966), United States federal judge John Frush Knox (1907–1997), law clerk to U.S. Supreme Court Justice James Clark McReynolds John H. Knox, first United Nations special rapporteur on human rights and the environment
Military John Knox (British Army officer) (died 1778), served in North America between 1757 and 1760 and notable for the journals he kept during this period John Simpson Knox (1828–1897), Scottish soldier and VC recipient John J. Knox, U.S. Army major during the American Civil War
Politics John Knox (mayor), Lord Mayor of Dublin 1685–1686 John Knox (1728–1775), member of the Parliament of Ireland for Donegal 1761–68 and Castlebar 1768–74 John Knox (1740–1791), member of the Parliament of Ireland for Dungannon 1769–76 John Knox (1758–1800), member of the Parliament of Ireland for Killybegs 1777–83 and Dungannon 1790–94 John Henry Knox (1788–1872), member of the UK Parliament for Newry James Knox (British politician) (John James Knox, 1790–1856), member of the UK Parliament for Dungannon John T. Knox (1924–2017), American politician and lawyer
Sports John Knox (rugby union) (1880–1964), Scotland rugby union player John Knox (cricketer) (1904–1966), Argentine cricketer John Knox (footballer) (born 1941), Australian rules footballer John Knox (baseball) (born 1948), American baseball infielder Johnny Knox (born 1986), American football player
Others John Knox (rebel minister) (active 17th c) a non-conforming Scottish minister who founded the John Knox Church and was exiled as a slave to New Jersey John Knox (philanthropist) (1720–1790), Scottish bookseller and philanthropist John Knox (artist) (1778–1845), Scottish landscape painter who painted a depiction of the Nelson Monument, Glasgow John Jay Knox Jr. (1828–1892), American financier John Leonard Knox (1925–2015), British High Court judge John Knox (chemist) (1928–2018), professor of physical chemistry John Knox (meteorologist) (fl. 1980s–2010s), American meteorologist and mathematician, found new method of calculating the mathematical constant John H. Knox (fl. 1980s–2010s), United Nations special rapporteur John Knox, a character from Lantana
See also Johnny Knoxville (born 1971), American actor Jon Knox, American session musician drummer, producer and composer