McConnell's spinetail (Synallaxis macconnelli) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae.

The International Ornithological Committee recognizes two subspecies, the nominate S. m. macconnelli (Chubb, 1919) and S. m. obscurior (Todd, 1948).

Their underparts are mostly brownish gray with a slightly paler belly and a faint brown tinge on the flanks.

Juveniles are slightly paler overall than adults, with a gray and white barred throat and a browner breast and belly.

The nominate subspecies is found on the tepuis of southern Venezuela, far western Guyana, and extrene northwestern Brazil.

It is thought to feed on arthropods that it gleans from foliage and small branches, staying about 1 to 2 m (3 to 7 ft) above the ground.

[11][12] The nest of McConnell's spinetail is a ball of sticks with an entrance tube on the side, typically placed in a shrub about 3 to 4 m (10 to 13 ft) above the ground.

The song of McConnell's spinetail is a "dry rattle, ending in a higher pitched, full-stop 'drrrrrh-Tic' ".

"Evidently a true forest species which, unlike many Synallaxis spinetails, does not occur in heavily cut-over areas.