The Band-tailed Antshrike (Sakesphorus melanothorax) is a species of bird in the Thamnophilidae family. It is found in the eastern Guianas of Suriname and French Guiana mostly; also Brazil, Guyana, and Atlantic regions of the Amazon Basin, and some local regions upstream on the Amazon. Its natural habitat is subtropical or tropical swamps. It has recently been proposed that it more properly belongs to the genus Thamnophilus (Brumfield et al., 2007).