Vieillot's black weaver (''Ploceus nigerrimus'') is a species of bird in the family Ploceidae. It is found in southern Nigeria to Uganda, west Kenya, Angola and the Democratic Republic of the Congo. The common name is after the French ornithologist Louis Pierre Vieillot. This species was formerly considered to be conspecific with

chestnut-and-black weaver The chestnut-and-black weaver (''Ploceus castaneofuscus'') is a species of bird in the family Ploceidae. It is found in West Africa from Sierra Leone to southern Nigeria. The chestnut-and-black weaver was formerly treated as a subspecies ...

(''Ploceus castaneofuscus''). The species were split based on the striking differences in the colour of the plumage.

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Vieillot's black weaver
- Species text in Weaver Watch. Vieillot's black weaver Birds of Central Africa Vieillot's black weaver Taxa named by Louis Pierre Vieillot Taxonomy articles created by Polbot {{Ploceidae-stub