- an autonomous region in the Khabarovsk territory of the Russian Federation in E Siberia. 13,900 sq. mi. (36,000 sq. km). Capital: Birobidzhan.
- an administrative division of SE Russia, in E Siberia: colonized by Jews in 1928; largely agricultural. Capital: Birobidzhan. Pop: 190 900 (2002). Area: 36 000 sq km (13 895 sq miles)