Western Siberia or West Siberia (russian: Западная Сибирь, Zapadnaya Sibir'; kk, Батыс Сібір) is a part of the larger region of Siberia that is mostly located in the Russian Federation. It lies between the Ural region and the Yenisei River, which conventionally divides Siberia into two halves. Western Siberia covers an area of , nearly 80% of which is located within the West Siberian Plain. The largest rivers of the region are the Irtysh and the Ob. The West Siberian petroleum basin is the largest hydrocarbon ( petroleum and natural gas) basin in the world covering an area of about 2.2 million km², and is also the largest oil and gas producing region in Russia. In medieval times, the region was part of the Golden Horde. After its gradual decline during the 15th century, the Khanate of Sibir, centered on Tyumen, was formed within the area. In the late 16th century, most of Western Siberia was

conquered Conquest is the act of military subjugation of an enemy by force of arms. Military history provides many examples of conquest: the Roman conquest of Britain, the Mauryan conquest of Afghanistan and of vast areas of the Indian subcontinent, t ...

by the Russian Empire, while its southern region became part of the

Kazakh Khanate The Kazakh Khanate ( kk, Қазақ Хандығы, , ), in eastern sources known as Ulus of the Kazakhs, Ulus of Jochi, Yurt of Urus, was a Kazakh state in Central Asia, successor of the Golden Horde existing from the 15th to 19th century, ...

. The current international borders between Russia and Kazakhstan came into being in the late 20th century following the

dissolution of the Soviet Union The dissolution of the Soviet Union, also negatively connoted as rus, Разва́л Сове́тского Сою́за, r=Razvál Sovétskogo Soyúza, ''Ruining of the Soviet Union''. was the process of internal disintegration within the Sov ...

Major cities

The most populous city of Western Siberia is

Novosibirsk Novosibirsk (, also ; rus, Новосиби́рск, p=nəvəsʲɪˈbʲirsk, a=ru-Новосибирск.ogg) is the largest city and administrative centre of Novosibirsk Oblast and Siberian Federal District in Russia. As of the Russian Census ...

. Other major cities include: *

Omsk Omsk (; rus, Омск, p=omsk) is the administrative center and largest city of Omsk Oblast, Russia. It is situated in southwestern Siberia, and has a population of over 1.1 million. Omsk is the third largest city in Siberia after Novosibirsk ...

* Tyumen *

Surgut Surgut ( rus, Сургу́т, p=sʊrˈgut; Khanty: Сәрханӆ, ''Sərhanł'') is a city in Khanty-Mansi Autonomous Okrug, Russia, located on the Ob River near its junction with the Irtysh River. It is one of the few cities in Russia to be lar ...

* Barnaul *

Tomsk Tomsk ( rus, Томск, p=tomsk, sty, Түң-тора) is a city and the administrative center of Tomsk Oblast in Russia, located on the Tom River. Population: Founded in 1604, Tomsk is one of the oldest cities in Siberia. The city is a not ...

* Kokshetau *

Kemerovo Kemerovo ( rus, Ке́мерово, p=ˈkʲemʲɪrəvə) is an industrial city and the administrative center of Kemerovo Oblast, Russia, located at the confluence of the Iskitimka and Tom Rivers, in the major coal mining region of the Kuznetsk Ba ...

* Novokuznetsk * Kurgan * Pavlodar * Petropavl * Semey * Oskemen

References

{{Authority control Geography of Siberia Geography of Kazakhstan Regions of Russia