The term Greater Serbia or Great Serbia (Serbian: Велика Србија, romanized: Velika Srbija) describes the Serbian nationalist and irredentist ideology of the creation of a Serb state which would incorporate all regions of traditional significance to Serbs, a South Slavic ethnic group, including regions outside modern-day Serbia that are partly populated by Serbs. The initial movement's main ideology (Pan-Serbism) was to unite all Serbs (or all territory historically ruled, seen to be populated by, or perceived to be belonging to Serbs) into one state, claiming, depending on the version, different areas of many surrounding countries, regardless of non-Serb populations present.
The Greater Serbian ideology includes claims to various territories aside from modern-day Serbia, including the whole of the former Yugoslavia except Slovenia and part of Croatia. According to Jozo Tomasevich, in some historical forms, Greater Serbian aspirations also included parts of Albania, Bulgaria, Hungary and Romania. Its inspiration comes from the medieval Serbian Empire which existed briefly in 14th-century Southeast Europe from 1346 to 1371, prior to the Ottoman conquest of the Balkans. Some territories intended to be incorporated in the Greater Serbia exceeded the boundaries of the Serbian Empire, however.
