Secondary Highway 522, commonly referred to as Highway 522, is a provincially maintained highway in the Canadian province of Ontario. The highway is 109.6 kilometres (68.1 mi) in length, connecting Highway 69 near Cranberry with Highway 11 at the community of Trout Creek. Highway 522 serves as the only link between these two routes south of Highway 17 and north of Highway 124. It is often used to access Grundy Lake Provincial Park, a popular camping area for northbound travellers.