The Serbian Empire was a medieval Serbian state that emerged from the Kingdom of Serbia. It was established in 1346 by Dušan the Mighty, who significantly expanded the state.

The Kingdom of Serbia, or the Serbian Kingdom, was a medieval Serbian state that existed from 1217 to 1346 and was ruled by the Nemanjić dynasty. The Grand Principality of Serbia was elevated with the regal coronation of Stefan Nemanjić as king, after the reunification of Serbian lands. In 1219, Serbian Orthodox Church was reorganized as an autocephalous archbishopric, headed by Saint Sava. The kingdom was proclaimed an empire in 1346, but kingship was not abolished as an institution, since the title of a king was used as an official designation for a co-ruler of the emperor.