The Battle of Campaldino is a battle between the Guelphs and Ghibellines on June 11, 1289.

[ Mixed bands of pro-papal Guelph forces of Florence and allies, Pistoia, Lucca, Siena and Prato, all loosely commanded by the paid condottiero Amerigo di Narbona with his own professional following, meet a Ghibelline force from Arezzo including the perhaps reluctant bishop, Guglielmino degli Ubertini, in the plain of Campaldino, which leads from Pratovecchio to Poppi, part of the Tuscan countryside along the upper Arno called the Casentino.

One of the combatants on the Guelph side is Dante Alighieri, twenty-four years old at the time.