Steven Alfonso Del Duca (born July 7, 1973) is a Canadian politician who has been serving as the 5th mayor of Vaughan since 2022. Del Duca previously served as the leader of the Ontario Liberal Party from 2020 to 2022 and was an Ontario cabinet minister from 2014 to 2018, first as the minister of transportation and then as the minister of economic development. He represented the riding of Vaughan in the Ontario Legislative Assembly from 2012 to 2018. On October 24, 2022, he was elected the mayor of Vaughan, taking office on November 15.