The 2020 Mugello FIA Formula 3 round was a motor racing event held on 12 and 13 September 2020 at the Mugello Circuit in Tuscany, Italy. It was the season finale of the 2020 FIA Formula 3 Championship, and ran in support of the 2020 Tuscan Grand Prix. Oscar Piastri would be crowned champion after Logan Sargeant collided with Lirim Zendeli in Race 2, and Theo Pourchaire failed to outscore him.