Mark Stewart (racing driver)

Mark Stewart is an American professional stock car racing driver who currently competes part-time in the NASCAR Whelen Modified Tour, driving the No. 81 for Christopher Turbush. He is the nephew of Chris and Roger Turbush, the latter of which also competes part-time in the series.
Stewart has also previously competed in the EXIT Realty ProTruck Challenge, the Monaco Modified Tri-Track Series, and the NASCAR Weekly Series, and is a frequent competitor at his home track of Riverhead Raceway.