The 2020 NASCAR Cup Series was the 72nd season for NASCAR professional stock car racing in the United States and the 49th season for the modern era Cup Series. The season began at Daytona International Speedway with the Busch Clash, the Bluegreen Vacations Duel qualifying races, and the 62nd running of the Daytona 500. The regular season ended with the Coke Zero Sugar 400 at Daytona on August 29. The NASCAR playoffs ended with the Season Finale 500, the first finale at Phoenix Raceway on November 8.

Stewart–Haas Racing is an American professional stock car racing team that currently competes in the NASCAR Cup Series and the NASCAR Xfinity Series. The team is co-owned by three-time NASCAR Cup Series champion Tony Stewart and Haas Automation founder Gene Haas. It was founded in 2002 as Haas CNC Racing after Haas, whose company was a sponsor of Hendrick Motorsports, elected to form his own team. In 2009, Stewart, who had been driving for Joe Gibbs Racing, made a deal with Haas to drive for the team and in return receive a 50% stake in it.