The blackish-grey antshrike (Thamnophilus nigrocinereus) is a species of bird in the family Thamnophilidae, the antbirds. The species is found in Brazil, Colombia, Venezuela, and eastern French Guiana; also a small river region of northeast Bolivia.Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical swamps. It got its name "blackish-grey antshrike" because of its blackish-grey color, distinguishing it from other Antshrikes.