Proctoporus xestus, or the river teiid, is a species of lizard in the family Gymnophthalmidae. The species is endemic to South America.

Geographic range: P. xestus occurs from central Peru to Bolivia (Chuquisaca, Cochabamba, and Santa Cruz departments) and northern Argentina (Jujuy, and Salta provinces).

Habitat: The preferred natural habitats of P. xestus are Yungas forest and wet montane grassland, at elevations of above sea level.

 P. xestus may attain a snout-to-vent length (SVL) of . The tail length is almost twice the SVL.

Reproduction: P. xestus is oviparous.

Taxonomy: P. xestus is the type species of the genus Opipeuter Uzzell, 1969, now synonymized with Proctoporus.