S. Lorenzo in Damaso

Basilica Minore di San Lorenzo in Damaso Minor Basilica of St. Lawrence in Damaso (in English) S. Laurentii in Damaso (in Latin)
Entrance to the Basilica, incorporated into the side facade of the Palazzo della Cancelleria
Basic information
Location	Rome, Italy
Affiliation	Roman Catholic
District	Lazio
Province	Rome
Country	Italy
Ecclesiastical or organizational status	Titular church
Leadership	Antonio Maria Rouco Varela
Architectural type	Church

The Minor Basilica of St. Lawrence in Damaso (Basilica Minore di San Lorenzo in Damaso) or simply San Lorenzo in Damaso is a parish and titular church in central Rome, Italy that is dedicated to St. Lawrence, deacon and martyr. It is incorporated into the Palazzo della Cancelleria, which enjoys the extraterritoriality of the Holy See.

Archaeological evidence suggests the site, like those of many churches in Rome, may have formerly housed a pagan temple. The first documentary evidence of a church at this site is the reference in the synod of Pope Symmachus of AD 499 of a Titulus Damasi. According to tradition, in the AD 380s a basilica church was erected by Pope Damasus I in his own residence. This church is one of many in Rome dedicated to St. Lawrence, including the more ancient and then extra-urban Basilica di San Lorenzo Fuori le Mura, that was rebuilt by the same Pope Damasus I. The original basilica of San Lorenzo in Damaso was demolished by Cardinal Raffaele Riario, a nephew of Pope Sixtus IV who commissioned the imposing Renaissance-style Palazzo della Cancelleria (1489–1513). The palace was built of spolia and stone from nearby ancient Roman buildings, including the Colosseum, and enveloped the new basilica of San Lorenzo in Damaso under the right wing; the entrance is located at Number 1, Piazza della Cancelleria, on the right flank of the facade.