2018 Wellington County municipal elections
Elections were held in Wellington County, Ontario on October 22, 2018 in conjunction with municipal elections across the province.
Wellington County Council
The council consists of the seven mayors of the constituent municipalities plus nine councillors elected from county wards.| Position | Elected |
| Centre Wellington Mayor | Kelly Linton |
| Erin Mayor | Allan Alls |
| Guelph/Eramosa Mayor | Chris White |
| Mapleton Mayor | Gregg Davidson |
| Minto Mayor | George Bridge |
| Puslinch Mayor | James Seeley |
| Wellington North Mayor | Andy Lennox |
| Ward 1 | David Anderson |
| Ward 2 | Earl Campbell |
| Ward 3 | Campbell Cork |
| Ward 4 | Stephen O'Neill |
| Ward 5 | Mary Lloyd |
| Ward 6 | Diane Ballantyne |
| Ward 7 | Don McKay |
| Ward 8 | Doug Breen |
| Ward 9 | Jeff Duncan |