John Cronin
John Cronin may refer to:
- John Cronin , director of the Royal Botanic Gardens, Melbourne
- John Cronin , currently the chairperson of the Bay of Plenty's regional council
- John Cronin , British surgeon and Labour Party politician
- John Cronin , repeat-offence Scottish convict who become the first convict to be tracked by satellite in the UK
- John Francis Cronin, priest, author of Communism: a World Menace
- John Cronin , US politician
- John Cronin , former US hockey player
- John Cronin , Irish Gaelic footballer
- John Cronin , Paralympic boccia player