Piva (Serbian Cyrillic: Пива; pronounced [pîʋa]) is a historical region in modern Montenegro, which existed as a tribe also known as Pivljani (Пивљани, pronounced [pîʋʎaːni]) in Old Herzegovina. It is situated in the northwestern highlands of Montenegro, bordering the Republika Srpska (Bosnia and Herzegovina). The Piva lake flows through the region. It includes modern day Plužine.
Under Prince Nicholas I of Montenegro and the Congress of Berlin recognition, in 1878 the Piva together with the Serb Herzegovinian tribes of Banjani, Nikšići, Šaranci, Drobnjaci and a large number of the Rudinjani formed the Old Herzegovina region of the new Montenegrin state.
The tribe has since the arrest of Radovan Karadžić, the wartime Bosnian Serb president and member of the neighbourly Drobnjak tribe of Petnjica (from which also the Serbian language reformer Vuk Karadžić descends), petitioned for Tadić's excommunication from the tribe because of Karadžić's arrest. The arrest is seen as directly bad behavior against the Serbian people and from the Piva against the Drobnjak tribe, who had never before had any problems, and it is because of this Tadić's actions have been condemned.
Pivljani exist outside the Piva region in Glasinac, Sarajevo Polje and Nikšić. The traditional Slava's (Serb-Orthodox Patron Saint holiday) of the Pivljani are predominantly the Nikoljdan and Jovanjdan, although other Slava's may be celebrated in smaller families.
- Tadić, they celebrate the Slava of Jovanjdan
- Kecojević, they celebrate the Slava of Jovanjdan
- Čupić, they celebrate the Slava of Jovanjdan
- Djurkovic, they celebrate the Slava of Nikoljdan
- Skiljevic, they celebrate the Slava of Jovanjdan
- Bajo Pivljanin (d. 1685), Venetian guerilla leader, born in Piva
- Stojan Čupić (1765–1815), Serbian revolutionary, born in Piva
- Arsenije Loma (1778-1815), one of the leaders of the First Serbian Uprising
- Simo and Sćepan Kecojević, soldiers, born in Boričje, Plužine
- Radoman Božović, Prime Minister of Serbia 1991–93, born in Šipačno, Plužine
- Ljubomir Tadić, Yugoslav and Serbian academic, born in Plužine area
- Jovan Cvijić, Serbian academic, by distant paternal ancestry
- Arsenije Gagović
- patriarch Makarije Sokolović
- partiarch Savatije Sokolović
- vojvoda Lazar Sočica
- Vule Adžić
- patriarch Antonije
- patriarch Gerasim
- Spasoje Tadić
- Radoje Dakić
- Obren Blagojević
- Jovan Vuković
- Aleksandar Tijanic, by paternal ancestry
- Vidoje Žarković
- Vjekoslav Luburić, by paternal ancestry
- Milka Tadić, by paternal ancestry
- Ivan Kecojević, by paternal ancestry
- Dragan Mićanović, by paternal ancestry
- Momčilo Bajagić, by distant paternal ancestry
- Bojan Dubljević
- Jelena Dubljević
- Stefan Cicmil, by paternal ancestry
- Milan Gutović, by paternal ancestry
- Ivan Ivanović
- Boris Tadić, by paternal ancestry
- Ognjen Tadic, by paternal ancestry
- Novica Tadić
- Svetozar Tomić (1949). Piva i Pivljani. Srpska akademija nauka.
- Milorad Likić; Jovan Plavša (2002). Piva i pivljani nekad i sad. Kulturni centar Karlovačka umetnička radionica.
- Radovan M. Marinković (2002). Pivljani u Čačku. Grafotrade. ISBN 978-86-902669-1-3.