Baron Clonbrock, of Clonbrock in County Galway, was a title in the Peerage of Ireland. It was created on 3 June 1790 for Robert Dillon, who had earlier represented Lanesborough in the Irish House of Commons. His grandson, the third Baron, sat in the House of Lords as an Irish representative peer and served as Lord-Lieutenant of Galway. He was succeeded by his eldest son, the fourth Baron. He was also an Irish Representative Peer and Lord-Lieutenant of Galway. The title became extinct on the death of his son, the fifth Baron, on 1 November 1926.