John Frank Nemechek was an American racing driver who competed in the NASCAR Craftsman Truck Series.

Joseph Frank Nemechek III is an American professional stock car racing driver who last competed part-time in the NASCAR Xfinity Series, driving the No. 24 Toyota Supra for Sam Hunt Racing. Nemechek has made the second most national series starts in NASCAR history. He claimed the record in 2019 after he passed seven-time Cup Series champion Richard Petty, but was surpassed by Kevin Harvick in 2021. Nemechek won the 1992 NASCAR Busch Series championship.