The Great People's Assembly of the Serb People in Montenegro, commonly known as the Podgorica Assembly, was an ad hoc popular assembly convened in November 1918, after the end of World War I in the Kingdom of Montenegro. The assembly was organized by a committee supported by and coordinating with the government of the Kingdom of Serbia. The committee convened the assembly with the aim of facilitating an unconditional union of Montenegro and Serbia and removing king Nikola I of Montenegro from the throne. The unification preceded the establishment of the Kingdom of Serbs, Croats and Slovenes as a unified state of South Slavs by mere days. The unification was justified by the need to establish a single Serbian state for all Serbs, including Montenegro whose population as well as its king felt that it belonged to the Serbian nation and largely supported the unification.

The Kingdom of Serbia was a country located in the Balkans which was created when the ruler of the Principality of Serbia, Milan I, was proclaimed king in 1882. Since 1817, the Principality was ruled by the Obrenović dynasty. The Principality, under the suzerainty of the Ottoman Empire, de facto achieved full independence when the very last Ottoman troops left Belgrade in 1867. The Congress of Berlin in 1878 recognized the formal independence of the Principality of Serbia, and in its composition Nišava, Pirot, Toplica and Vranje districts entered the South part of Serbia.