Foligno was founded by Umbrians in the pre-Roman period (probably 8th century BC). It was conquered by the Romans after the Battle of Sentinum in 295 BC, receiving the name of Fulginiae from the ancient cult of the goddess Fulginia. Foligno recovered and continued to grow, ultimately gaining the status of free city in 1165 thanks to Emperor Frederick Barbarossa.
When Corrado Trinci turned against the Papal authority, Pope Eugene IV sent a force against Foligno in 1439, led by Cardinal Giovanni Vitelleschi. The inhabitants opened their gates and Corrado was beheaded in 1441 in the Castle of Soriano. Henceforth Foligno belonged to the Papal States until 1860, with the exception of the Napoleonic era, when it was part of the Roman Republic (1799) then of the Kingdom of Italy (1809 - 1814).