Phrynopus oblivius is a species of frog in the family Strabomantidae. It is endemic to central Peru and only known from near its type locality near Maraynioc, in the Tarma Province, Junín Region, at about 3,210–3,220 m (10,530–10,560 ft) asl. It is known from a collection in 2005; there has been no later surveys for the species.

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