The Battle of Firenzuola is fought on July 29, 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 is a defeat for Berengar, who is thus de facto dethroned and replaced by Rudolf as King of Italy.

His own grandson and namesake, Berengar II, who will later be king of Italy as well, fights on the winning side against him.