The 2021 ARCA Menards Series season was the 69th season of the ARCA Menards Series, a stock car racing series sanctioned by NASCAR in the United States. The season began at Daytona International Speedway with the Lucas Oil 200 on February 13 and ended with the Reese's 150 at Kansas Speedway on October 23. Ty Gibbs was crowned the series champion, having won ten times and finished in the top four in 19 of 20 races.