Sclater's antwren (Myrmotherula sclateri) is a species of bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds".

The yellow-throated antwren's original author considered them likely to be conspecific but that treatment has not gained acceptance.

[8][9] Sclater's antwren is found in the upper Amazon Basin south of the Amazon River, in eastern Peru, northern Bolivia, and western Brazil east to the Xingu River and south to Mato Grosso state.

It inhabits the mid-storey to canopy of lowland evergreen forest including terra firme, várzea, and transitional types.

It typically forages in pairs or family groups and almost always as part of a mixed-species feeding flock.

The song of Sclater's antwren is a "short, slow series of 4-6 well-separated 'peuw' notes".

"In addition, extensive intact habitat remains which, although not formally protected, appears to be at little near-term risk of development.