The Piva is a river in Montenegro and Bosnia and Herzegovina. The river runs through Montenegro for most of its course length, and in its last three kilometres marks the border between the two countries.
The Piva emerges from the Sinjac wellspring, which is also simply called Wellspring of Piva, situated near the Piva Monastery underneath of Golija mountain. After a kilometer or so, and before the artificial Lake Piva was formed, the waters from the well rushed into the river Komarnica, creating the Piva river for the next 34 km.
However, Komarnica is part of an 86 km long river system (Tušina→Bukovica→Komarnica), so measured from the source of the Tušina river (Cyrillic: Тушина), the Piva, nicknamed the river with five names, is 120 km long.
