Okrug (окръг; Serbian and о́круг; округа, translit. okruha; Polish okręg) is an administrative division of some Eastern European Slavic states. The word "okrug" is a loanword in English, but it is nevertheless often translated as "area", "district", or "region". Etymologically, the word is similar to the German word Bezirk ("district") or the French word Arrondissement; all of the three—okrug, Bezirk and Arrondissement—refer to something "encircled" or "surrounded" (compare circle (country subdivision)).
In Bulgaria, okrugs, translated as "districts" or "counties", were the first-level subdivisions of Bulgaria that existed between 1946 and 1987. They correspond approximately to today's oblasts.
National okrugs were first created in the Mountain ASSR of the Russian SFSR in 1921 as units of Soviet autonomy and additional national okrugs were created in the Russian SFSR for the peoples of the north. In 1977, all national okrugs were renamed autonomous okrugs.
In the present-day Russian Federation, the term okrug is either translated as "district" or rendered directly as "okrug", and is used to describe the following types of divisions:
After the series of mergers in 2005–2008, several autonomous okrugs of Russia lost their federal subject status and are now considered to be administrative territories within the federal subjects they had been merged into:
Okrug is also used to describe the administrative divisions of the two "federal cities" in Russia:
Furthermore, the designation okrug denotes several selsovet-level administrative divisions:
Okrug is also used to describe a type of a municipal formation, the "municipal urban okrug"—a municipal urban settlement not incorporated into a municipal district.
The Republic of Serbia is divided into twenty-nine okrugs as well as the City of Belgrade. The term okrug in Serbia is often translated as either "district" or "county".