Lake Kutubu
 Lake Kutubu is a lake in the Southern Highlands Province of Papua New Guinea. It lies to the east of the Kikori River into which it eventually drains. It is about 50 km southwest of Mendi the provincial capital. It is one of the few lakes in the country that occurs in a depression in the rugged interior mountains. It is the second-largest lake in Papua New Guinea after Lake Murray and at 800 m above sea level the largest upland lake.