Abbey of San Caprasio in Aulla, Medieval monastery and archaeological site in Aulla, Italy.

The Abbey of San Caprasio is a church with a semicircular apse from the 10th century and a three-nave layout rebuilt after World War II. In the canonica, three circular pillars with depressed capitals supported the small cloister roof. The chapter house now holds the Museo di San Caprasio, displaying Roman and medieval finds and reconstructions of a pilgrim, a monk and an abbot.

Founded in 884 by Adalbert I, Margrave of Tuscany, as a hostel on the pilgrimage route to Rome, the abbey was first dedicated to Santa Maria Assunta. In 1077 it was re-dedicated to Saint Caprasius of Lérins, the only such dedication in Tuscany. Linked to the Malaspina family and contested by the Vescovi Conti of Luni, it was powerful by the early 13th century, owning parishes and land. The monastery was suppressed at the end of the 18th century under Napoleonic occupation, while the church survived.

The dedication to Caprasius of Lérins, a hermit saint of the Îles de Lérins, is the only case of such a dedication in Tuscany; the church was founded in 884 as Santa Maria Assunta and appears under the new name from 1050. Caprasius is the patron of Aulla and of pilgrims, and the abbey began as a hostel on the road to Rome.

The church stands on Piazza Abbazia in central Aulla. The presbytery area has been excavated and can be visited: the monumental tomb of the saint, traces of a 7th-century church and the 884 building with its marble floor of reused Roman stone, including a 1st-century BC inscription. The Museo di San Caprasio, in the former chapter house, displays Roman and medieval finds and reconstructions of a pilgrim, a monk and an abbot.

The saint's tomb was sealed between 1000 and 1050, and inside it archaeologists found a stucco reliquary holding the relics of Caprasius. The tomb lies in the excavated presbytery, where the foundations of a 7th-century church and of the 884 building are also visible.