The creamy-bellied antwren (Herpsilochmus motacilloides) is a species of bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds".

[3] In the early twenty-first century, phylogenetic and other analyses confirmed that it is a species.

Adult females have a rusty brown forehead and a black streak behind the eye.

[7] The creamy-bellied antwren is found on the east side of the Peruvian Andes between the departments of Huánuco and Cuzco.

It inhabits it interior and edges of humid montane forest where it favors areas with tall trees and much moss and epiphytes.

It has a large range and an unknown population size that is believed to be decreasing.

"The primary threat to this species is accelerating deforestation in its range as forests are logged for conversion into pastures and agriculture cultivation.