The 2021 Championnat de France FFSA GT - GT4 France season was the twenty-fourth season of the French FFSA GT Championship and the fourth as the French GT4 Cup, a Sports car championship created and organised by the Stephane Ratel Organisation (SRO). The season began on 3 April in Nogaro and ended on 3 October at Paul Ricard.
Bold indicates overall winner.
Championship points were awarded for the first ten positions in each race. Entries were required to complete 75% of the winning car's race distance in order to be classified and earn points. Individual drivers were required to participate for a minimum of 25 minutes in order to earn championship points in any race.