Tarsius tumpara, tarsius siau, or tumpara (Tarsius tumpara) is a nocturnal primate within the Tarsiidae family. These primates are endemic to Siau Island, Sitaro Islands District. The name Tumpara is the name people used on Siau Island for this primate.
Tarsius tumpara is referred to as one of the 25 most endangered primate species by the IUCN Species Survival Commission Primate Specialist Group. The main threat to this primate is its distribution which is limited to a small volcanic island of Siau Island, an ever-increasing human population, and hunting.