Tarsius fuscus is a species of tarsier. Its range is in Indonesia in the southwestern peninsula of the island of Sulawesi, near Makassar. At one point the taxon was downgraded to a junior synonym of the spectral tarsier (T. tarsier). However, when that species' range was restricted to the population on a single island near Sulawesi, this nomen was resurrected to contain the remainder of that species.