The Peruvian wren (Cinnycerthia peruana) is a species of bird in the family Troglodytidae. It is endemic to Peru.

The Peruvian wren is 15.5 to 16 cm (6.1 to 6.3 in) long and weighs 19.6 g (0.69 oz). The adults' upperparts are rich chestnut, with the crown and rump being redder. They have a variable amount of white on the face. The tail is also rich chestnut and has narrow black bars. The chin and throat are orange-brown and the chest, belly, and flanks are the same hue but darker. The juvenile is believed to resemble the adult but with no white on the face.