San Esteban Atatlahuca is a town and municipality located in Oaxaca and south-western part of Mexico.

The municipality covers an area of 61.24 km².

It is part of the Tlaxiaco District in the south of the Mixteca Region.

As of 2005, the municipality had a total population of 3,676.

This article about a location in the Mexican state of Oaxaca is a stub.