John Metcalfe

John Metcalfe may refer to:
 * John Metcalfe (composer), British-based composer and violist
 * John Metcalfe (writer) (1891–1965), British science fiction and horror writer
 * Jack Metcalfe (1912–1994), Australian athlete
 * John Metcalfe (footballer) (1935–1996), English professional footballer
 * John Metcalfe (librarian) (1901–1982), Australian librarian
 * John Francis Metcalfe (1908–1975), British Army general