Mathieu Fleury (born September 26, 1985 in Ottawa, Ontario) is the Ottawa City Councillor of Rideau-Vanier Ward, which includes Lowertown, Sandy Hill and Vanier. He won the ward in the 2010 Ottawa municipal election, defeating the incumbent Georges Bédard in a narrow contest, the youngest City Councillor to be elected at that time. He was subsequently re-elected as the councillor in the 2014 and 2018 Ottawa municipal elections. He indicated in early 2022 that he will not seek re-election in the upcoming 2022 municipal elections.