The County of Montone was a noble fiefdom in Italy, formed of the town of Montone and its territory. That territory was turned into a county by Antipope John XXIII on 28 August 1414 and granted by him to Braccio da Montone, a condottiero. Pope Martin V refounded it and on Braccio's death in 1424 confirmed it to Braccio's son Carlo. It was under the jurisdiction of the Papal States until 1519, when pope Leo X granted it to Vitello Vitelli, a member of the Vitelli family of Città di Castello. That family held it until 1573 and then from 1598 to 1646, when their line went extinct.
Chiappino III died without issue in 1646 and the county was absorbed into the Papal States, never to be awarded again.