The black-faced ibis (Theristicus melanopis) is a species of bird in the Threskiornithidae family. It is found in grassland and fields in southern and western South America. It has been included as a subspecies of the similar buff-necked ibis, but today all major authorities accept the split. On the contrary, the black-faced ibis includes the taxon branickii as a subspecies, although some authorities treat it as a separate species, the Andean ibis (T. branickii).