The 2025 FIA Formula 3 Championship is a planned motor racing championship for Formula 3 cars sanctioned by the Fédération Internationale de l'Automobile (FIA). The championship is the sixteenth season of Formula 3 racing and the seventh season run under the FIA Formula 3 Championship moniker. It is an open-wheel racing category serving as the third tier of formula racing in the FIA Global Pathway. The category will be run in support of selected rounds of the 2025 FIA Formula One World Championship. As the championship is a spec series, all teams and drivers competing in the championship will run the same car.
Prema Racing will enter the season as the reigning Team's Champions having secured their title in the penultimate race of the 2024 in Spa-Francorchamps.
2025 will see the introduction of a new Dallara-built chassis, with the championship retiring the Dallara F3 2019 it had used since its inaugural season in 2019.