Nymphargus phenax

{{Short description|Species of frog}}

{{Speciesbox

| status = EN

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=IUCN SSC Amphibian Specialist Group |date=2018 |title=Nymphargus phenax |volume=2018 |page=e.T54979A89198547 |doi=10.2305/IUCN.UK.2018-2.RLTS.T54979A89198547.en |access-date=17 November 2021}}

| taxon = Nymphargus phenax

| authority = (Cannatella & Duellman, 1982)

| synonyms = * Cochranella phenax

}}

Nymphargus phenax is a species of frog in the family Centrolenidae, formerly placed in Cochranella.

It is endemic to Peru.

Its natural habitats are subtropical or tropical moist montane forests and rivers.