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

It is endemic to Venezuela and currently only known from its type locality, the north base of Pico Tamacuari, in the Sierra Tapirapecó, Amazonas state.

One specimen had a tan vertebral line that extended through the dark inter-orbital bar to the snout.

The female holotype had vague blotches that became only noted after preservation.

[2] The species' natural habitat is montane tepui forest at elevations of 1,160–1,460 m (3,810–4,790 ft) above sea level.