The Rondonia warbling antbird (Hypocnemis ochrogyna) is a species of bird in the family Thamnophilidae. Until recently, it was considered a subspecies of Hypocnemis cantator, but based on vocal differences and to a lesser degree differences in plumages it has been recommended treating them as separate species. As presently defined, the Rondonia warbling antbird is monotypic. The Rondonia warbling antbird is found at lower levels in humid forest and woodland in the Brazilian states of Mato Grosso and Rondônia, and adjacent north-eastern Bolivia.