Pennant's colobus or Pennant's red colobus (Procolobus pennantii) is a species of tree-dwelling primate in the family Cercopithecidae. It is endemic to tropical Central Africa. Three subspecies have traditionally been recognised but its distribution is peculiarly disjunct and has been considered a biogeographical puzzle. with one population on the island of Bioko (Equatorial Guinea), a second in the Niger River Delta in southern Nigeria, and a third in east-central Republic of Congo. It is found in rainforests and marshy forests. It is threatened by habitat loss and hunting for bushmeat. One subspecies, bouvieri, is rated as Critically Endangered; although it was last photographically documented in 2015, it may be on the brink of extinction.