The tantalus monkey (Chlorocebus tantalus) is an Old World monkey from Africa that ranges from Ghana to Sudan. It was originally described as a subspecies of the grivet (Chlorocebus aethiops). All species in Chlorocebus were formerly in the genus Cercopithecus. It is a common species with a wide range, and the International Union for Conservation of Nature has rated its conservation status as being of "least concern". This species has three recognized subspecies: * C. t. tantalus * C. t. budgetti * C. t. marrensis