John Blair may refer to:
Politics John Blair Sr. (1687–1771), American merchant and politician in the colony of Virginia John Blair Jr. (1732–1800), American politician, Founding Father and jurist John Blair (Tennessee politician) (1790–1863), American politician John Blair (Northern Ireland politician) (born 1966), Member of the Legislative Assembly for South Antrim John Knox Blair (1873–1950), Canadian politician, physician and teacher John Rutherfurd Blair (1843–1914), New Zealand politician
Sports John Blair (1890s footballer), Scottish footballer active 1894–1899 John Blair (footballer, born 1898) (1898–1971), Scottish footballer (Partick Thistle) John Blair (English footballer) (1898–1974), top scorer in the 1923–24 Oldham Athletic A.F.C. season John Blair (footballer, born 1905) (1905–1974), Scottish footballer (Third Lanark, Tottenham Hotspur, Sheffield United) John Blair (footballer, born 1910) (1910–1975), Scottish footballer (Motherwell and Scotland) John Blair (Australian footballer) (born 1955), Australian rules footballer John Blair (rugby union) (c. 1871–1911), New Zealand rugby union player
Other John Blair (historian) (born 1955), British historian, archaeologist, and academic John Blair (pastor) (1720–1771), Presbyterian minister John Blair (priest) (died 1782), British clergyman and chronologist John Blair (writer) (born 1961), American poet, novelist, and short-story writer John Blair (musician), American violinist on the 1973 album Song of the New World John Blair (painter) (1849–1934), Scottish painter John Blair (surgeon) (1928–2023), Scottish surgeon John Hamilton Blair (1889–1972), Scottish mariner John Hunter Blair (1903–1964), British television producer John Insley Blair (1802–1899), American entrepreneur, railroad magnate, and philanthropist John Leo Blair (1888–1962), American businessman John T. Blair (1885–1976), American architect and builder
See also John Hamilton of Blair (c. 1638–1690), 17th-century Scottish bishop John Insley Blair Larned (1881–1955), American Episcopal bishop Jon Blair (born 1950), South African-born writer and filmmaker Jon Blair Hunter, American politician active 1996–2008