Highway 12 is a major highway in the Canadian province of Saskatchewan. It begins in Saskatoon at the intersection of Idylwyld Drive and 22nd Street, initially running north on Idylwyld concurrently with Highway 11. Just outside Saskatoon's northern city limits, Highway 11 branches off and Highway 12 continues north to Township Road 502 near Shell Lake. Highway 12 is about 133 km (83 mi.) long.
Highway 12 cross the North Saskatchewan river over Petrofka Bridge.
Highway 12 passes through the city of Martensville and the town of Blaine Lake. Other than Highway 11, Highway 12 intersects the major highways Highway 40 and Highway 3.