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The 2018 Waterloo Region municipal elections were held on October 22, 2018 in the Regional Municipality of Waterloo, Ontario, Canada, to elect Waterloo Regional Council, the mayors and city councils of Cambridge, Kitchener, North Dumfries, Waterloo, Wellesley, Wilmot, and Woolwich, the Waterloo Region District School Board (Public), the Waterloo Catholic District School Board, and the regional members of Conseil Scolaire de District Catholiques Centre-Sud and Conseil Scolaire Viamonde (Public). The election was held in conjunction with the province wide 2018 municipal elections.
Names in bold denotes elected candidates.
(X) denotes incumbent.