The 2020 ARCA Menards Series season was the 68th season of the ARCA Menards Series. It began on February 8 with the Lucas Oil 200 at Daytona International Speedway and ended on October 16 with the Speediatrics 150 at Kansas Speedway. 2020 was the first season that the series was sanctioned by NASCAR.

The ARCA Menards Series is an American stock car series, the premier division of the Automobile Racing Club of America (ARCA). It is considered a minor, semi-professional league of stock car racing, used as a feeder series into the three national touring series of NASCAR, and hosts events at a variety of track types including superspeedways, road courses, and dirt tracks. It also provides hobby drivers a chance to experience racing at large tracks used in the three national touring series in NASCAR. The series has had a longstanding relationship with NASCAR, including using former NASCAR Cup Series cars, hosting events in the same race weekend such as Daytona Speedweeks, and naming an award after NASCAR founder Bill France, Sr. However, the series was not officially affiliated with NASCAR until its buyout on April 27, 2018.