The Russet Bush-warbler (Bradypterus mandelli) is a songbird species. Formerly placed in the "Old World warbler" assemblage, it is now placed in the newly-recognized family Megaluridae. B. mandelli was until recently considered a subspecies of B. seebohmi, and the name "Russet Bush-warbler" was applied to the entire species complex. After this was split up, Benguet Bush-warbler was proposed as a new name for B. seebohmi proper.