Dominique O'Rourke is a Canadian politician who has served as the member of Parliament for the riding of Guelph as a member of the Liberal Party since 2025. She previously served as a Guelph city councillor from 2018 to 2025, where she represented Ward 6.
O'Rourke holds a bachelor's degree in economics from the University of Ottawa and a Master of Arts in leadership from the University of Guelph.
O'Rourke was first elected to the Guelph City Council in the 2018 municipal election in Ward 6 after garnering 31.8% of the vote. O'Rourke was then re-elected in the 2022 municipal election in Ward 6 with 36.0% of the vote. During O'Rourke's time in office, she served as the chair of its Infrastructure, Development, and Environment Services Committee.
In July 2024, O'Rourke was acclaimed as the Liberal Party candidate for the riding of Guelph after Lloyd Longfield announced that he would not be seeking re-election. O'Rourke was elected in the 2025 federal election with 54.7% of the vote and subsequently stepped down as city councillor.