The Treaty of Bagnolo is signed on August 7, 1484, ending the War of Ferrara (1482-1484) between Duke Ercole I d'Este of Ferrara and the Republic of Venice (which was allied with Pope Sixtus IV).
The war was caused by salt tariffs and Venetian expansionism and the treaty forced Ferrara to cede territories north of the Po River, including the Palesine and Rovigo to Venice, securing peace for the Italian peninsula and giving Venice a major territorial gain, extending its mainland holdings.