Justin Marks (born March 25, 1981) is an American professional race car driver. He currently competes in the WeatherTech SportsCar Championship, driving the No. 93 for Meyer Shank Racing with Curb-Agajanian in the GT Daytona class. He also competes part-time in the Monster Energy NASCAR Cup Series, driving the No. 51 Chevrolet Camaro ZL1 for Rick Ware Racing in partnership with Premium Motorsports, and the No. 15 Chevrolet Camaro ZL1 for Premium Motorsports, and part-time in the NASCAR Xfinity Series, driving the No. 42 Chevrolet Camaro for Chip Ganassi Racing.