The dark-breasted spinetail (Synallaxis albigularis) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae.

[4] The dark-breasted spinetail has two subspecies, the nominate S. a. albigularis (Sclater, PL, 1858) and S. a. rodolphei (Bond, J, 1956).

Their hindcrown and nape are dark rufous, and their back, rump and uppertail coverts olive-brown.

Juveniles have a brownish gray crown, mostly dark ochraceous underparts, and a paler and less distinct throat patch than adults.

[4][5][6][7] Subspecies S. a. rodolphei of the dark-breasted spinetail is found from Meta Department in south-central Colombia south into northeastern Ecuador as far as Napo Province.

The nominate subspecies is found from Napo in Ecuador and extreme southern Amazonas Department in southeastern Colombia south through eastern Ecuador and Peru into western Bolivia and east in Brazil along the Amazon River to the Rio Negro.

Its nest is a mass of sticks with an entrance tube on the side, typically placed in dense vegetation about 1 to 2 m (3 to 7 ft) above the ground.