The Battle of Firenzuola was fought on 29 July 923 between the forces of Rudolph II of Burgundy and Adalbert I of Ivrea on one side and Berengar I of Italy on the other. The battle was a defeat for Berengar, who was thus de facto dethroned and replaced by Rudolf as King of Italy. His own grandson and namesake, Berengar II, who would later be king of Italy as well, fought on the winning side against him.