John Crowley may refer to:
John Crowley (author) (1942–2026), American author John Crowley (baseball) (1862–1896), American Major League catcher John Crowley (businessman) (born 1967), American biotechnology executive John Crowley (bishop) (born 1941), former bishop of Middlesbrough John Crowley (director) (born 1969), Irish theatre and film director John Crowley (politician) (1870–1934), Irish Sinn Féin politician John Crowley (1659–1728), British politician John Francis Crowley (1891–1942), Irish revolutionary and hunger striker John Powers Crowley (1936–1989), U.S. federal judge Johnny Crowley (born 1956), Irish hurler Johnny Crowley (Gaelic footballer), Gaelic footballer with Kerry GAA John J. Crowley (1891–1940), American Catholic priest John W. Crowley (1899–1974), American pilot and NASA director