John Coyne is the name of: John Coyne (politician) (1836–1873), Canadian barrister and politician John Coyne (writer) (born 1937), American writer of horror novels John M. Coyne (1916–2014), former mayor of Brooklyn, Ohio John Coyne (soccer) (born 1951), English-born football (soccer) player who played for Australia John N. Coyne (1839–1907), American Civil War soldier John F. Coyne, former CEO of Western Digital, retired 2013