The scaly-breasted cupwing or scaly-breasted wren-babbler (Pnoepyga albiventer) is a species of bird in the Pnoepyga wren-babblers family, Pnoepygidae.

It is found in southern and eastern Asia from the Himalayas to Indochina.

The scaly-breasted cupwing is a very small babbler with almost no tail, around 9 cm long and weighing between 19 and 23 g. The plumage is olive on the back and lightly scalloped on the chest.

The natural habitat of the scaly-breasted cupwing is subtropical moist montane forest.

The species undertakes some altitudinal migration, moving closer to sea level during the winter over some of its range.