The Yellow-olive Flatbill is a tyrant flycatcher ranging from Central into South America. It occurs in open woodland, second growth and streamside clearings in lowlands and foothills, searching foliage for insects.
It has an olive back, gray crown, black wings with two yellow bars, a whitish throat, olive breast and flanks, and a pale yellow belly. Its bill is broad and flat.
It searches the foliage of mid-level trees for insects in lowland and foothill second growth, woodland edges and streamside clearings.
An extinction-risk assessment has not been added yet.