The Peruvian Wren (Cinnycerthia peruana) is a species of bird in the Troglodytidae family. It formerly included the Sharpe's Wren (C. olivascens) and the Fulvous Wren (C. fulva) as subspecies, but under the common name Sepia-brown Wren (a name sometimes still used for the Sharpe's Wren). As presently defined, the Peruvian Wren is endemic to dense undergrowth of humid Andean forests in Peru.