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.

The medieval period in the history of Serbia began in the 6th century with the Slavic migrations to Southeastern Europe, and lasted until the Ottoman conquest of Serbian lands in the second half of the 15th century. The period is also extended to 1537, when Pavle Bakić, the last titular Despot of Serbia in Hungarian exile, fell in the Battle of Gorjani.