The agile mangabey (Cercocebus agilis) is an Old World monkey of the white-eyelid mangabey group found in swampy forests of Central Africa in Equatorial Guinea, Cameroon, Gabon, Central African Republic, Republic of Congo, and DR Congo.

[3] Although generally arboreal, they do spend a significant portion of their time (12–22%) on the ground,[5] especially during the dry season.

[5] Their tooth structure and powerful jaws allows them to open tough pods and fruits that many other monkeys can not access.

[5] Agile mangabeys eat from a number of dominant swamp-forest trees, including dika nuts and sugar plums, when they are fruiting.

Grasses and mushrooms,[4] as well as insects, other invertebrates, bird's eggs and some vertebrate prey, such as rodents, are also eaten.