Danny Breen (born c. 1962) is a Canadian politician, who was elected mayor of St. John's, Newfoundland and Labrador in the 2017 municipal election on September 26, 2017.Prior to his election to the mayoralty, Breen represented Ward 1 on St. John's City Council from 2009 until 2017. He ran as a Progressive Conservative candidate for the Newfoundland and Labrador House of Assembly in a 2014 by-election in the electoral district of Virginia Waters, but was defeated by Liberal Cathy Bennett.Breen is a graduate of Memorial University of Newfoundland with a Bachelor of Arts degree (Political Science).