Tyumen Oblast (Russian: Тюме́нская о́бласть, Tyumenskaya oblast) is a federal subject (an oblast) of Russia. It is geographically located in the Western Siberia region of Siberia, and is administratively part of the Urals Federal District. The oblast has administrative jurisdiction over two autonomous okrugs: Khanty–Mansi Autonomous Okrug and Yamalo-Nenets Autonomous Okrug. Tyumen Oblast including its autonomous okrugs is the third-largest federal subject by area.
Tyumen is the largest city and capital of Tyumen Oblast, and the first Russian settlement east of the Ural Mountains.
Tyumen Oblast is the largest producer of oil and natural gas in the country, and has experienced an oil boom since the early 2000s. The rapid growth of the fuel industry has made the oblast by far the richest federal subject of Russia, with an average GDP per capita several times the national average since 2006.
The territory covers 160,100 km2. The Tyumen Region was founded in August 14, 1944. It includes two autonomous okrugs of the Khanty-Mansiysk Autonomous Okrug and the Yugra and Yamalo-Nenets Autonomous Okrug. The territory is located in the basin of the river. The biggest rivers are the Tura, Tobol, Pyshma, Iset, Tavda, Ishim, Agan, Irtysh, and Noska. The hydro-geographical system is characterized with the prevalence of small rivers as well as the significant bogginess of their catchment areas and numerous lakes.