Cladonia camerunensis is a species of lichen in the family Cladoniaceae. Found in Cameroon, it was formally described as a new species in 2016 by lichenologists Teuvo Ahti and Adam Flakus. The type specimen was collected on Minloua Mountain, west of Yaoundé, at an altitude of . Here the lichen was found growing among plant debris over rock in open areas. The species is only known to occur in two locations on Minloua Mountain, which is a tropical inselberg. Secondary chemicals that are found in the lichen include barbatic acid (a major metabolite) and didymic acid (a minor component).