John Hunter Nemechek (born June 11, 1997) is an American professional stock car racing driver. He competes full-time in the NASCAR Cup Series driving the No. 42 Toyota Camry XSE for Legacy Motor Club and part-time in the NASCAR Xfinity Series, driving the No. 20 Toyota Supra for Joe Gibbs Racing.
Nemechek began his racing career at the age of 5, competing in go-karts, quarter midget cars and in dirt bike competition. He moved up to stock car competition in 2010, competing in the Allison Legacy Series with sponsorship from England Stove Works.
In 2012, Nemechek moved up to late model and super late model competition, competing in the Champion Racing Association Super Series and American Speed Association Midwest Tour; he also competed in the World Series of Asphalt at New Smyrna Speedway during Speedweeks. Nemechek won praise from Sprint Cup Series driver Kyle Busch following a CRA Super Series race in which both drivers competed.
On November 16, 2020, Nemechek parted ways with Front Row Motorsports. A week later, he signed with Kyle Busch Motorsports for the 2021 Truck Series season.