San Andrés Huayapam is a town and municipality in Oaxaca in south-western Mexico.

It is part of the Centro District in the Valles Centrales region.

Huayapam makes up part of the IV Federal Electoral District of Oaxaca.

[1] The municipality includes part of the Benito Juárez National Park.

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