King's Highway 17, more commonly known as Highway 17, is a provincially maintained highway and the primary route of the Trans-Canada Highway through the Canadian province of Ontario. It begins at the Manitoba boundary, 50 km (31 mi) west of Kenora, and the main section ends where Highway 417 begins just west of Arnprior. A small disconnected signed section of the highway still remains within the Ottawa Region between County Road 29 and Grants Side Road. This makes it Ontario's longest highway.

Schreiber is a municipal township in the Canadian province of Ontario, located on the northernmost point of Lake Superior along Highway 17. The town, with a population of approximately 1100 people, is almost completely located inside the geographic township of Priske, with a small western portion of the town in the southeast of Killraine Township.