Ogilby's duiker (Cephalophus ogilbyi) is a small antelope found in Sierra Leone, Liberia, Ghana, southeastern Nigeria, Equatorial Guinea's Bioko Island, and, possibly, Gabon. The two former subspecies, the white-legged duiker Cephalophus crusalbum and the Brooke's duiker Cephalophus brookei, are considered as distinct species since 2011.
