The grey-browed wren (Pheugopedius schulenbergi) is a small passerine bird in the wren family Troglodytidae. It is found in northern Peru north of the Río Marañón. It was formerly considered to be a subspecies of the plain-tailed wren.
The grey-browed wren was formally described in 1985 by the American ornithologists Theodore A. Parker III and John P. O'Neill based on a specimen that had been collected at an altitude of in the Cordillera de Colán of the Amazonas region of northern Peru. They considered the specimen to be a subspecies of the plain-tailed wren and coined the trinomial name Thryothorus euophrys schulenbergi where the specific epithet was chosen to honour Thomas S. Schulenberg who had collected the holotype.[1] It is now treated as a separate species based on the distinctive vocalizations and some morphological differences.[2] [3]