San Agustín is a city in the center-west of the province of Córdoba, Argentina. It is the head town of the Calamuchita Department.
The city lies on National Route 36, about 60 km south of the provincial capital, Córdoba. According to the 2001 census [INDEC], it had 2,870 inhabitants.
The area around San Agustín was used as a special stage in the 2014 Rally Argentina.