Petar II Petrović-Njegoš, Montenegrin metropolitan, philosopher, and poet (d. 1851)
Petar II Petrović-Njegoš (Serbian Cyrillic: Петар II Петровић-Његош, pronounced [pětar drûɡi pětroʋitɕ ɲêɡoʃ]; 13 November [O.S. 1 November] 1813 – 31 October [O.S. 19 October] 1851), commonly referred to simply as Njegoš (Његош), was a Prince-Bishop (vladika) of Montenegro, poet and philosopher whose works are widely considered some of the most important in Montenegrin and Serbian literature.

Njegoš was born in the village of Njeguši, near Montenegro's then-capital Cetinje. He was educated at several Serbian monasteries and became the country's spiritual and political leader following the death of his uncle Petar I. After eliminating all initial domestic opposition to his rule, he concentrated on uniting Montenegro's tribes and establishing a centralized state. He introduced regular taxation, formed a personal guard and implemented a series of new laws to replace those composed by his predecessor many years earlier. His taxation policies proved extremely unpopular with the tribes of Montenegro and were the cause of several revolts during his lifetime. Njegoš's reign was also defined by the constant political and military struggle with the Ottoman Empire, and by his attempts to expand Montenegro's territory while gaining unconditional recognition from the Sublime Porte. He was a proponent of uniting and liberating the Serb people, willing to concede his princely rights in exchange for a union with Serbia and his recognition as the religious leader of all Serbs (akin to a modern-day Patriarch of the Serbian Orthodox Church). Although unification between the two states did not occur during his lifetime, Njegoš laid some of the foundations of Yugoslavism and introduced modern political concepts to Montenegro. Venerated as a poet and philosopher, Njegoš is well known for his epic poem Gorski vijenac (The Mountain Wreath), which is considered a masterpiece of Serbian and other South Slavic literature, and the national epic of Serbia, Montenegro, and Yugoslavia. Njegoš has remained influential in Serbia and Montenegro, as well in neighboring countries.