Pier Saccone Tarlati di Pietramala (1261–1356) was an Italian condottiero from Pietramala d'Arezzo in the Val d'Arno, a rocca that controlled the mule track between his native town of Arezzo and Anghiari. Pietramala ("Bad rock") was the seat of the powerful family of the Tarlati, who came to prominence in the strife following Arezzo's decisive defeat at Campaldino (1289) as heads of the Ghibelline "Secchi" faction of Arezzo. Pier Saccone's brother was Guido Tarlati, bishop and signore of Arezzo.
Pier Saccone, during a fighting career that lasted to his final days, held for periods of time the lordships of Anghiari, Arezzo, Città di Castello, Sansepolcro, Bibbiena, Chiusi Subbiano and Castiglion Fiorentino, in addition to numerous smaller strongholds.
In 1312, with his brother Tarlatino Tarlatini, he was in the retinue of Henry of Luxembourg, Holy Roman Emperor at Rome. In August 1315 he participated at the battle of Montecatini, at the head of 140 gentlemen of Arezzo. In 1320 his reputation was assured through his acquisition of numerous castelli from Guido Novello da Polenta, the host of Dante in exile. In October 1323 he was invested with Città di Castello. In February 1327 he paid court in Milan to Ludwig of Bavaria, King of Germany, who was crowned with the Iron Crown of Lombardy by his brother Guido, bishop of Arezzo,; in October that year, at the death of Guido, he was made Lord of the city, for the space of one year; however, after he attended the coronation in Rome of Ludwig as Holy Roman Emperor the following January and was excommunicated in March 1328 by John XXII along with the Emperor and the major members of his party, the Emperor formally invested him as Signore of Arezzo and Città di Castello, in December, following the death of his brother, who had held the position for his lifetime. Pier Saccone's rule marked a rapid decline in the fortunes of Arezzo, which had reached their apogee under the bishop his brother.