Orenburg Oblast in the context of "Samara Oblast"

Bugulma-Belebey Upland (Russian: Бугульминско-Белебеевская возвышенность; Bashkir: Бөгөлмә-Бәләбәй ҡалҡыулығы; Tatar: Бөгелмә-Бәләбәй калкулыгы) is an upland in the eastern part of Eastern European Plain, west of the Urals, in Tatarstan, Bashkortostan and Orenburg Oblast, Russia. It forms the drainage divide of the Volga, Kama and Belaya rivers. The upper point of the upland is 418 m height. Romashkino field is placed there.

Ural Economic Region (Russian: Ура́льский экономи́ческий райо́н, romanized: Ural'skiy ekonomicheskiy rayon) is one of twelve economic regions of Russia. This prominent industrial region consists of the following subdivisions (with their administrative centers): Bashkortostan (Ufa), Chelyabinsk Oblast (Chelyabinsk), Kurgan Oblast (Kurgan), Orenburg Oblast (Orenburg), Perm Krai (Perm), Sverdlovsk Oblast (Yekaterinburg) and Udmurt Republic (Izhevsk). It is mostly located in the Central, and partly in the Southern and Northern parts of the Urals, but also includes parts of the East European and West Siberian Plains. Its extent is different from that of the Ural Federal District; Bashkortostan, Orenburg Oblast, Perm Krai and Udmurtia are in the Volga Federal District while the other three are in the Ural Federal District.

Orsk (Russian: Орск) is the second largest city in Orenburg Oblast, Russia, located on the steppe about 100 kilometers (62 mi) southeast of the southern tip of the Ural Mountains. The city straddles the Ural River. Population: 239,800 (2010 census); 250,963 (2002 census); 270,711 (1989 Soviet census). It lies adjacent to the Kazakhstan–Russia border.

Orenburg (Russian: Оренбу́рг, pronounced [ɐrʲɪnˈburk]), formerly known as Chkalov (1938–1957), is the administrative center of Orenburg Oblast, Russia. It lies in Eastern Europe, near the boundary of Europe and Asia, along the banks of the Ural River, being approximately 1,480 kilometers (920 mi) southeast of Moscow.

Orenburg is close to the border with Kazakhstan. It was the capital of the Kazakh ASSR from 1920 to 1925.

Bashkortostan, officially the Republic of Bashkortostan, sometimes also called Bashkiria, is a republic of Russia between the Volga river and the Ural Mountains in Eastern Europe. The republic borders Perm Krai to the north, Sverdlovsk Oblast to the northeast, Chelyabinsk Oblast to the east, Orenburg Oblast to the south, Tatarstan to the west and Udmurtia to the northwest. It covers 143,600 square kilometres (55,400 square miles). It is the seventh-most populous federal subject in Russia and the most populous republic. Its capital and largest city is Ufa. As of 2025, it has a population of 4,046,094.

Bashkortostan was established on 28 November [O.S. 15 November] 1917. On 20 March 1919, it was transformed into the Bashkir ASSR, the first autonomous republic in the Russian SFSR. On 11 October 1990, it adopted the Declaration of State Sovereignty. In the Constitution of Bashkortostan and Constitution of Russia, Bashkortostan is defined as a state.

Tatarstan, officially the Republic of Tatarstan, sometimes also called Tataria, is a republic of Russia located in Eastern Europe. It is a part of the Volga Federal District; and its capital and largest city is Kazan, an important cultural centre in Russia. The region's main source of wealth is oil with a strong petrochemical industry.

The republic borders the oblasts of Kirov, Ulyanovsk, Samara and Orenburg, as well as the republics of Mari El, Udmurtia, Chuvashia and Bashkortostan. Tatarstan has strong cultural, linguistic and ethnic ties with its eastern neighbour, Bashkortostan, which is also a republic of Russia. The area of Tatarstan is 68,000 square kilometres (26,000 sq mi), occupying 0.4% of the total surface of the country. As of the 2021 Census, the population of Tatarstan was 4,004,809.

The Erzya language (эрзянь кель, eŕźań keĺ, pronounced [ˈerʲzʲanʲ ˈkʲelʲ]), also Erzian or historically Arisa, is spoken by approximately 300,000 people in the northern, eastern and north-western parts of the Republic of Mordovia and adjacent regions of Nizhny Novgorod, Chuvashia, Penza, Samara, Saratov, Orenburg, Ulyanovsk, Tatarstan and Bashkortostan in Russia. A diaspora can also be found in Armenia and Estonia, as well as in Kazakhstan and other states of Central Asia. Erzya is currently written using Cyrillic with no modifications to the variant used by the Russian language. In Mordovia, Erzya is co-official with Moksha and Russian.

The language belongs to the Mordvinic branch of the Uralic languages. Erzya is a language that is closely related to Moksha but has distinct phonetics, morphology and vocabulary.

Kuvandyk (Russian: Куванды́к, romanized: Kuvandyk) is a town in Orenburg Oblast, Russia, located on the Sakmara River at the southern end of the Ural Mountains, 194 kilometers (121 mi) east of Orenburg, the administrative center of the oblast. Population: 26,169 (2010 census); 28,679 (2002 census); 28,339 (1989 Soviet census).