Sant'Agostino is a Roman Catholic church, originally founded in the 13th-century but refurbished in the following centuries, located on Corso XI Settembre in the historic center of Pesaro, region of Marche, Italy.
A church at this site was first built in 1258 in a romanesque-style; in 1282 it was assigned to the cloistered Augustinian monks.
The elaborate ogival entrance portal was erected between 1398 and 1413, under the patronage of the Malatesta dei Sonetti.
A further refurbishment occurred in the 18th century, surrounding the portal with a baroque facade.
The interior retains a 15th-century wooden choir with intarsia, likely built to celebrate the wedding in 1475 between Costanzo Sforza and Camilla d'Aragona.