The Crowsnest Highway is an east-west highway in southern Alberta and British Columbia. It is not part of the Trans-Canada Highway, but an alternate scenic route between Hope, British Columbia and Medicine Hat, Alberta, where it connects with the Trans-Canada Highway at both ends.

The 1,160-kilometre (720 mi) Crowsnest Highway, designated as Highway 3 in both provinces, is a mostly two-lane highway that provides a connection between the Lower Mainland and Southern Alberta through the Canadian Rockies. It takes its name "Crowsnest" from the Crowsnest Pass, the location at which the highway crosses the Continental Divide between British Columbia and Alberta. In British Columbia, the highway is entirely in mountainous regions and is also known as the Southern Trans-Provincial Highway, with the western-most segment locally known as the Hope–Princeton Highway. In Alberta, the terrain is initially mountainous, before smoothing to foothills and eventually generally flat prairie in the vicinity of Pincher Creek.