2018 Peterborough County municipal elections
Elections were held in Peterborough County, Ontario, on October 22, 2018, in conjunction with municipal elections across the province.
Peterborough County Council
Peterborough County Council consists of two members from each of the county's constituent municipalities.| Position | Elected |
| Asphodel-Norwood Mayor | Rodger Bonneau |
| Asphodel-Norwood Deputy Mayor | Bernadette Vanderhorst |
| Cavan Monaghan Mayor | Scott McFadden |
| Cavan Monaghan Deputy Mayor | Matthew Graham |
| Douro-Dummer Mayor | J. Murray Jones |
| Douro-Dummer Deputy Mayor | Karl Moher |
| Havelock-Belmont-Methuen Mayor | Jim Martin |
| Havelock-Belmont-Methuen Deputy Mayor | David Gerow |
| North Kawartha Mayor | Carolyn Amyotte |
| North Kawartha Deputy Mayor | Jim Whelan |
| Otonabee-South Monaghan Reeve | Joe Taylor |
| Otonabee-South Monaghan Deputy Reeve | Bonnie Clark |
| Selwyn Mayor | Andy Mitchell |
| Selwyn Deputy Mayor | Sherry Senis |
| Trent Lakes Mayor | Janet Clarkson |
| Trent Lakes Deputy Mayor | Ron Windover |