Cebus albifrons (Humboldt, 1812); Sapajus apella (Linnaeus, 1758) and Aotus lemurinus I. Geoffroy, 1843 are widely distributed primates in Colombia. Despite this, there are gaps in the occurrence of these species in the southwestern part of the country. Through the collection of specimen remains, molecular analyses and review of museum specimens, we reported new records for these species in the Department of Nariño, expanding their distribution range. Finally, we highlight some important notes for the conservation of these species.