Salt War (Italian: Guerra del sale) may refer to:

• Salt War (1304), between Venice and Padua
• War of Ferrara (1482–1484), also called the Salt War, between Venice and Ferrara
• Salt War (1540), between Perugia and the Papal States
• Salt War (1556–1557) [it], between Naples and the Papal States
• Salt War (1680–1699) [it], a series of rebellions in the Duchy of Savoy
• San Elizario Salt War (1877–1878), a range war in the United States