The Kingdom of Slavonia (Croatian: Kraljevina Slavonija, Latin: Regnum Sclavoniae, Hungarian: Szlavón Királyság, German: Königreich Slawonien, Serbian Cyrillic: Краљевина Славонија) was a kingdom of the Habsburg monarchy and the Austrian Empire that existed from 1699 to 1868. The kingdom included northern parts of present-day regions of Slavonia (today in Croatia) and Syrmia (today in Serbia and Croatia). The southern parts of these regions were part of the Slavonian Military Frontier, which was a component of the Military Frontier separating the Habsburg monarchy from the Ottoman Empire.