John Flood may refer to:
John Flood (academic), UK-Australian legal sociologist John Flood (cricketer) (1883–1929), Australian born, Irish cricketer John Flood (Fenian) (1835–1909), Irish revolutionary John Flood (footballer, born 1932), English footballer with Southampton and Bournemouth John Flood (footballer, born 1960), Scottish footballer with Sheffield United, Airdrieonians and Partick Thistle John Joe Flood (1899–1982), Irish footballer John H. Flood (1939–2016), Massachusetts sheriff and politician John H. Flood Jr. (1878–1958), mining engineer and unpublished Wyatt Earp biographer