Highway 373 is a provincial highway in the Canadian province of Saskatchewan. It runs from Highway 42 near Lucky Lake to Highway 45 in Birsay. It is about long.
Hwy 373 begins in the Rural Municipality of Canaan No. 225 at an intersection with Hwy 42 roughly halfway between the village of Lucky Lake and the Riverhurst Ferry. It heads north as a paved, two-lane highway for a couple kilometres to an intersection with Township Road 235, where the asphalt transitions to gravel at the site of the former Whitby School. Continuing north through rural farmland for several kilometres, the highway crosses a small creek and enters the Rural Municipality of Coteau No. 255, continuing on for a few more kilometres to enter the hamlet of Birsay, regaining asphalt and crossing Hwy 646 / Township Road 250, which provides access to Hitchcock Bay. After forming the main thoroughfare through the centre of town, Hwy 373 crosses Big Sky Rail's Conquest subdivision before coming to an end at an intersection with Hwy 45.
From south to north: