John Weir may refer to: John Alexander Weir (1894–1942), Canadian lawyer and professor John Angus Weir (1930–2007), fourth president of Wilfrid Laurier University John Ferguson Weir (1841–1926), American painter and sculptor John Jenner Weir (1822–1894), English amateur entomologist, ornithologist and British civil servant John Weir (loyalist) (born 1950), Ulster loyalist Johnny Weir (born 1984), American figure skater John Weir (footballer), Scottish footballer John Weir (writer) (born 1959), American writer John Weir (geologist) (1896–1978), Scottish geologist and palaeontologist John Weir (physician) (1879–1971), Physician Royal to several British monarchs John Weir (politician) (1904–1995), Australian politician John Weir (trade unionist) (1851–1908), Scottish trade unionist