Roger Anderson John Henry Elections were held in the Regional Municipality of Durham in Ontario, on October 22, 2018 in conjunction with municipal elections across the province.

The following are the preliminary results for the position of Durham Regional Chair.

[2] Following a ward boundary review, Ajax gained one regional councillor and lost one local councillor for the 2018 election.

[6] For the 2018 election, Oshawa re-adopted a ward based system.

[7] Five Regional & City Councillors were elected in 1 of 5 wards.

The following are the preliminary results for the Town of Uxbridge.