The bicolored scrubwren or bicolored mouse-warbler (Aethomyias nigrorufus) is a species of bird in the family Acanthizidae. It is found in the New Guinea Highlands ; its natural habitat is subtropical or tropical moist montane forests.
This species was formerly placed in the genus Crateroscelis but following the publication of a molecular phylogenetic study of the scrubwrens and mouse-warblers in 2018, it was moved to the resurrected genus Aethomyias.