San Juan Bautista Valle Nacional is a town and municipality in Oaxaca in south-western Mexico.

The municipality covers an area of 394.23 km² within the Sierra Juárez mountains.

It is part of the Tuxtepec District of the Papaloapan Region.

The town lies on the north bank of the Valle Nacional River, a tributary of the Papaloapan River.

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