Timothy Crowley (31 July 1847 – 19 October 1921) was an Irish revolutionary who was a member of the Irish Republican Brotherhood (IRB). He was involved in the Fenian Rising of 1867, and was the secretary of the IRB in Hospital, County Limerick. He was the patriarch of the prominent Irish republican Crowley family of Ballylanders, and the father of the longest hunger strikers in history, Peter William Crowley and John Crowley, and the Fianna Fáil Politician Tadhg Crowley.