John Crowley
John Crowley may refer to:
- John Crowley (author), American author
- John Crowley (baseball), American Major League catcher
- John Crowley (businessman), American biotechnology executive
- John Crowley (bishop), former bishop of Middlesbrough
- John Crowley (director), Irish theatre and film director
- John Crowley (politician), Irish Sinn Féin politician
- John Crowley (1659–1728), British politician
- John Francis Crowley, Irish revolutionary and hunger striker
- John Powers Crowley, U.S. federal judge
- Johnny Crowley, Irish hurler
- Johnny Crowley (Gaelic footballer), Gaelic footballer with Kerry GAA
- John J. Crowley, American Catholic priest
- John W. Crowley, American pilot and NASA director