Bertie Messitt (28 September 1930 –; 18 February 2012) was an Irish long-distance runner. He was educated in Saint Cronan's Boys' National School in Bray. A bus conductor, he won his fourth Irish cross country title in 1961. By the time he had ended his competitive career in 1966, he had recorded 16 Irish records, nine in 1958 alone: 13:44 for three miles, 14:14.8 for 5,000m, 49:33 for 10 miles. He finished 13th in the European Marathon Championships in Belgrade in 1962. His best marathon time, 2:25.39, was set in 1963. He won the Irish marathon championship in 1960, running 2:28:40, qualifying him for the Irish team in the marathon at the 1960 Summer Olympics.