Okręg (plural okręgi) is a term used in Polish to denote regions and jurisdictions of various types, including electoral constituencies. As historical administrative subdivisions of Poland, okręgi existed in the later part of the Congress Poland period, from 1842, when the name was applied to the former powiats (the name powiat being transferred to the former obwody). See Administrative division of Congress Poland.
Okręgi were also created temporarily from 1945 to 1946, in the areas annexed to Poland from Germany as a result of the Soviet military advance. An okręg was then subdivided into obwody. These okręgi were later replaced by voivodeships, and the obwody by powiats.