Ossu is a town in Ossu Subdistrict, Viqueque District, East Timor. Located above sea level it lies approximately in a straight line north of the district capital of Viqueque and about southeast of the capital Dili. Ossu is surrounded by several mountains: the Monte Mundo Perdido in the west, the Builo in the south, the Matebian massif in the east and the Fatu Laritame the north.
In the village there is a community health center, a helipad, a primary school, a pre-secondary school and a secondary school, the Sta. Teresina Colegio.[1] There is the Catholic parish church of Sta. Teresinha do Menino Jesus (Teresa of the Child Jesus), which was inaugurated on 30November 2012, in the town.