John Curtin (1885–1945) was an Australian prime minister.
John Curtin may also refer to:
John I. Curtin (1837–1911), American Civil War general John Curtin (American politician) (1865–1925), California state senator John Thomas Curtin (1921–2017), U.S. federal judge John Curtin (footballer) (1924–2019), Australian rules footballer for St Kilda
See also John Curtin College of the Arts, high school in Fremantle, Western Australia John Curtin School of Medical Research, part of Australian National University John McCurtin (1896–1982), Irish Cumann na nGaedheal TD and prisoner