Provincial Trunk Highway 12 (PTH 12) is a provincial primary highway located in the Canadian province of Manitoba. It runs from the U.S. border (where it meets with Minnesota State Highway 313) to a dead end in Grand Beach. PTH 12 forms the Manitoba section of MOM's Way, a tourist route from Thunder Bay to Winnipeg. PTH 12 is primarily a two-lane highway except for two four-lane stretch between Steinbach and PTH 1 (22 kilometres) and a ten-kilometre concurrency with PTH 44.