Pristimantis fenestratus is a species of frog in the family Strabomantidae.

It is found in the Amazon Basin of eastern Peru, north-eastern Bolivia, south-eastern Ecuador, south-eastern Colombia, and Brazil.

Its common name is Rio Mamore robber frog, after Mamoré River, its type locality.

[2] Its natural habitats are tropical humid montane and lowland forests; it can also occur in secondary forest and forest edges.

This Strabomantidae article is a stub.