The grey-mantled wren (Odontorchilus branickii) is a species of bird in the family Troglodytidae.

The nominate adult has a tawny forecrown and a darker brown crown the merges into the gray of its back, which is browner on the rump.

The throat, breast, and belly are white slightly tinged with buff, and the flanks are grayish.

[3] The nominate grey-mantled wren has a discontinuous range in the southern part of Colombia's Eastern Andes and on the eastern slope of the main Andes through Ecuador and Peru to Bolivia's La Paz Department.

It forages 15 to 30 m (49 to 98 ft) up in the canopy by constantly moving along branches while probing moss and lichens for prey.