Lake of Bays is a township municipality within the District Municipality of Muskoka, Ontario, Canada. The township, situated 193 kilometres (120 mi) north of Toronto, is named after the Lake of Bays. During the 2016 census, the township had a population of 3,167 and encompassed 677.91 square kilometres (261.74 sq mi) of land.
Located in the northeast corner of Muskoka, the Lake of Bays offers a natural landscape of forests, rocks, lakes and wetlands. It is an important cottaging, recreation and tourism destination in Ontario. Currently, the economy of the township is primarily based on tourism, recreation, and the service sector with forestry and aggregate (composite) extraction contributing as well.