The Black-casqued hornbill or black-casqued wattled hornbill (Ceratogymna atrata), is a species of hornbill in the Bucerotidae family. It is found in Angola, Cameroon, Central African Republic, Democratic Republic of the Congo, Ivory Coast, Equatorial Guinea, Gabon, Ghana, Guinea, Liberia, Nigeria, Republic of the Congo, Sierra Leone, South Sudan, Togo, and Uganda.