The 2020 Pirelli GT4 America Series was the second season of the GT4 America Series. The series is split into a Sprint series, which features 50-minute races with one driver per car, and a SprintX series, which features one-hour races with two drivers per car and a mandatory driver change during Pit stops. The season begins on 7 March at Circuit of the Americas and ends on 3 October at Indianapolis Motor Speedway.
The final calendar was announced on 12 November 2019 Due to the COVID-19 pandemic, the SprintX and Sprint rounds at St. Petersburg and Long Beach were cancelled and replaced with tripleheaders at Virginia International Raceway and Sonoma Raceway.
Note: A car marked with <sup>STP</sup> is entered only for the St. Petersburg makeup races at VIR.
Bold indicates overall winner
Championship points are awarded for the first ten positions in each race. Entries are required to complete 75% of the winning car's race distance in order to be classified and earn points. Individual drivers are required to participate for a minimum of 25 minutes in order to earn championship points in any SprintX race.