Patterson Township is a geographic township in central Ontario, Canada. As it is unincorporated, it is located in the Central Unorganized portion of Parry Sound District. The township is located where the French River flows from Lake Nipissing, and then stretches south until it meets Pringle Township in the south. Its bordered by Nipissing Township on the east, and by Hardy Township on the west. Patterson only has one community, that of Restoule. Most of its settlement is found in the southern region where Restoule is, and along the two lakes of the south, Restoule Lake and Commanda Lake. It is part of the Almaguin Highlands region.
There are also some cottages located on the south shore of Lake Nipissing, but the area has no permanent residences. There are approximately 300 people living in the township (415 including nearby Farleys Corners and Carr). Patterson Township is also home to some other lakes, notably Patterson Lake, Watt Lake, Bass Lake, Sand Lake, Shoal Lake, Satchels Lake, Crooked Lake and the Rainy Lakes. The Restoule River also flows through the township, draining Commanda, Restoule and Patterson Lake. The township is also home to Restoule Provincial Park, located between Restoule and Patterson Lake and the French River Provincial Park located along the south shore of the French River and Lake Nipissing. Patterson Township has one provincially maintained highway, Highway 534.