Mildmay is a community of people of primarily English and German descent in the municipality of South Bruce, Bruce County, Ontario, Canada. it is northwest of Minto and south of Walkerton on Highway 9. Formosa lies to the northwest, and Neustadt to the east. Mildmay was possibly named after "the place in England where the famour Mildmay Evangelical Meetings were held". Post office dates from 1868. The town's official mascot is a muskrat named Mildred, after Mildred Westmay, the first person to open a business in Mildmay.