Umbertide (; known as Fratta until 1863) is a town and comune (municipality) in the province of Perugia, in the Italian region of Umbria, at the confluence of the Reggia river and the Tiber.
With over 16,000 inhabitants in 2021,
The present name Umbertide was adopted in the 19th century and is derived from the sons of Uberto Ranieri, credited with rebuilding the settlement in the Middle Ages.
19th century writers averred that Fratta originated in the 2nd century BC, founded by survivors of the Roman army defeated at the Battle of Lake Trasimene. Archaeological finds of weapons, marbles and bronzes were taken to indicate the presence of an ancient town. According to this tradition, the settlement was destroyed during the barbarian invasions and was rebuilt in the 10th century by Uberto Ranieri, lord of Civitella (later Civitella Ranieri).
During the 14th century it functioned as an administrative center within the territory of Perugia. In 1396 an institutional reform established a shared castellan and podestà with Sigillo and Montone.
Fratta later passed under the control of the Church, but after the death of Pope Martin V it was again subjected to Perugia.
In 2021, 2,138 people lived in rural dispersed dwellings not assigned to any named locality. The settlement does not appear as a separate locality in later census records.
In 1701, Civitella Ranieri was a feudal domain of Count Ranieri, a status which it retained in 1803.
The Ranieri family remained prominent in the 19th century, when the leading family was that of Count Ruggero Ranieri of Perugia; an ancestor of the same name, Ruggero Cane Ranieri, was a supreme commander of the Venetians.
The upper church, of Romanesque origin, was consecrated in 1105 and later modified in the 16th and 17th centuries. Its interior has three naves, with frescoes of Umbrian school dating to the 14th century. The raised presbytery with a Gothic apse contains an 8th-century ciborium with relief decoration and a 16th-century choir.