The white-throated guenon (Cercopithecus erythrogaster), also known as the red-bellied monkey and the red-bellied guenon, is a diurnal primate that lives on trees of rainforests or tropical areas of Nigeria and Benin.

The white-throated guenon was once considered extinct due to constant hunting for the fur of its unique red belly and white front legs.

The white-throated guenon is still considered an endangered species due to its decreasing population.

It is present within Nigerian forest reserves and sacred groves in Benin but hunting and logging restrictions are difficult to enforce or nonexistent.

[2][3][4] It is one of the species that live in the Guinean Forests of the West Africa Biodiversity Hotspot.