San Agustin Church is a Roman Catholic church under the auspices of The Order of St. Augustine located inside the historic walled city of Intramuros in Manila. It is the oldest stone church in the Philippines.
In 1993 San Agustin Church was listed by the UNESCO as one of the World Cultural Heritage Sites along with three other churches (Miago-o Church, Santa Maria Church, and Paoay Church) known collectively as the Baroque Churches of the Philippines.