Voivode (ˈvɔɪvoʊd ), also spelled voivod, voievod or voevod and also known as vaivode (ˈvaɪvoʊd,_ˈveɪ- ), voivoda, vojvoda or wojewoda, is a title denoting a military leader or warlord in Central, Southeastern and Eastern Europe in use since the Early Middle Ages. It primarily referred to the medieval rulers of the Romanian-inhabited states and of governors and military commanders of Ukrainian Cossacks, Hungarian, Balkan, Russian people and other Slavic-speaking populations.
In the Polish-Lithuanian Commonwealth, voivode was interchangeably used with palatine. In the Tsardom of Russia, a voivode was a military governor. Among the Danube principalities, voivode was considered a princely title.
The term voivode comes from two roots. Voi is related to warring, while vod means 'leading' in Old Slavic, together meaning 'war leader' or 'warlord'. The Latin translation is comes palatinus for the principal commander of a military force, serving as a deputy for the monarch. In early Slavic, vojevoda meant the bellidux, the military leader in battle. The term has also spread to non-Slavic languages, like Romanian, Hungarian and Albanian, in areas with Slavic influence.
During the Byzantine Empire it referred to military commanders mainly of Slavic-speaking populations, especially in the Balkans, the Bulgarian Empire being the first permanently established Slavic state in the region. The title voevodas (βοεβόδας) originally occurs in the work of the 10th-century Byzantine emperor Constantine VII in his De Administrando Imperio, in reference to Hungarian military leaders.
The title was used in medieval: Bohemia, Bosnia, Bulgaria, Croatia, Greece, Hungary, Macedonia, Moldavia, Poland, Rügen, Russian Empire, Ukraine, Serbia, Transylvania and Wallachia. In the Late Middle Ages the voivode, Latin translation is comes palatinus for the principal commander of a military force, deputising for the monarch gradually became the title of territorial governors in Poland, Hungary and the Czech lands and in the Balkans.