Mount Sabyinyo ('Sabyinyo' is derived from the Kinyarwanda word 'Iryinyo', meaning tooth; also Sabinyo, Sabinio) is an extinct volcano in eastern Africa, in the Virunga Mountains. It is located northeast of Lake Kivu, one of the African Great Lakes and west of Lake Bunyonyi in Uganda. The summit of the mountain, at 3,645 metres (11,959 ft), marks the intersection of the borders of the Democratic Republic of the Congo, Rwanda, and Uganda.