The Palazzo Mattei di Giove is the most prominent among a group of Mattei houses that forms the insula Mattei in Rome, Italy, a block of buildings of many epochsTo distinguish this section from the others it carries the name of a Mattei fief, Giove. The Mattei owned a number of other palazzi that carried the family name including Palazzo Mattei di Trastevere across the Tiber as well as properties in Umbria, the Palazzo Mattei Paganica.
