Sava Petrović (Serbian Cyrillic: Сава Петровић; 18 January 1702 – 9 March 1782) was the Metropolitan of Cetinje between 1735 and 1781, ruling what is known in historiography as the Prince-Bishopric of Montenegro; the polity in the hands of the Petrović-Njegoš dynasty.

At the end of September 1742,[4] Sava set off in person, and on reaching St. Petersburg the following spring he presented Montenegro's case to the newly enthroned Empress Elizabeth.

[3] As he made his way back through Berlin, Frederick the Great gave him a beautiful golden cross, though his journey did little to improve Montenegro's fortunes, leading him to withdraw from public life.

Sava then responded by writing to the Moscow Metropolitan that "the Serb Nation is under hard slavery" and so asked the Holy Synod of Russia to help the Serbian Patriarch.

Sava also wrote a letter to the Russian Empress asking "Protect the Serbs from the Greek and Turkish intruding [...] We are ready to pay Russia in blood".