The white-browed tit-spinetail (Leptasthenura xenothorax) is an Endangered species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae.

Their upperparts are dull grayish brown, with narrow black-outlined white streaks that become more prominent on the lower back, then fainter on the rump, and become more obvious but still pale on the uppertail coverts.

Their wings are dark fuscous with dull rufescent edges on the coverts and a pale tawny patch across the flight feathers.

Their tail is mostly dark fuscous to black; the feathers have bare shafts on their tips giving a spiny appearance.

Their throat and upper breast are whitish with coarse black mottling and the rest of their underparts are unmarked pale gray-brown.

Only one nest is known; it was a cup of moss, lichen, and bark fibers in a natural cavity in a Polylepis racemosa tree and contained two eggs.

On the brighter side, "[c]ommunity-based woodland habitat restoration efforts are currently underway at three locations in the Cordillera Vilcanota (Abra Malaga, Hulloc and Cancha-Cancha) under the guidance of the Peruvian non-governmental organization Asociación Ecosistemas Andinos (ECOAN).