Vukašin of Serbia

Vukašin Mrnjavčević (Serbian Cyrillic: Вукашин Мрњавчевић, pronounced [ʋukǎʃin mr̩̂ɲaːʋtʃeʋitɕ] ^ⓘ; c. 1320 – 26 September 1371) was King of Serbia as the co-ruler of Stefan Uroš V from 1365 to 1371. He was also a nobleman. Principal domains of Vukašin and his family were located in southern parts of medieval Serbia and northwestern parts of the modern region of Macedonia. He died in the Battle of Maritsa in 1371 with his brother, Jovan Uglješa.

In folk tradition, Vukašin is referred to as a usurper and, wrongly, the murderer of Tsar Uroš. He was often considered de facto ruler of Serbian Empire during the reign of Uroš.