Stewart J. Friesen is a Canadian-American professional dirt track and stock car racing driver. He competes full-time in the NASCAR Craftsman Truck Series, driving the No. 52 Toyota Tundra for his own team, Halmar Friesen Racing, and part-time at local dirt tracks across New York, Pennsylvania, New Jersey, and elsewhere in the United States, driving the No. 44 car for HFR.

Halmar Friesen Racing, also known as Halmar Racing Team, is an American professional stock car racing and dirt track racing team that currently competes in the NASCAR Craftsman Truck Series, fielding the No. 52 Toyota Tundra full-time for Stewart Friesen and the team also fields modified racing cars for several drivers around the Northeastern United States, including for Stewart and Jessica Friesen themselves.