Gazprom Neft (formerly: Sibneft; Russian: Газпром нефть, traded as MICEX-RTS: SIBN, LSE: GAZ, FWB: SCFF)) is the fifth largest oil producing and refining company in Russia. It's the oil arm of Gazprom, which owns 80% of Gazprom Neft's shares.

Gazprom Neft's central office is located in Moscow; however, the company is already registered in St. Petersburg where it also has an office. Upon the completion of their new office building, known as Gazprom City in St. Petersburg, Gazprom Neft is going to move its headquarters to Saint Petersburg in the near future. It is currently the largest employer in Omsk and Noyabrsk.

Gazprom Neft was created under the name Sibneft (Russian: Сибнефть) in 1995 by Presidential Decree №872, issued on 24 August 1995. A government resolution was signed on 29 September, and the State Property Committee on 11 October ordered that the state's shares in oil producing enterprise Noyabrskneftegas, the Omsk Refinery, exploration enterprise Noyabrskneftegasgeophysica and marketing company Omsknefteprodukt all be transferred to Sibneft.

Open Joint Stock Company Gazprom (Открытое Акционерное Общество «Газпром», OAO Gazprom Russian: ОАО «Газпром», IPA: [ɡɐsˈprom]; traded as MICEX-RTS: GAZP, LSE: OGZD, FWB: GAZ) is the largest extractor of natural gas in the world and the largest Russian company. Its headquarters are in Cheryomushki District, South-Western Administrative Okrug, Moscow. Its name is a contraction of Russian: Газовая промышленность, tr. Gazovaya Promyshlennost, meaning "gas industry". Gazprom was created in 1989 when the Ministry of Gas Industry of the Soviet Union transformed itself into a corporation, keeping all its assets intact. The company was later privatized in part, but currently the Russian government holds a controlling stake.

In 2008, the company produced 549.7 billion cubic metres (BCM) of natural gas, amounting to 17% of the worldwide gas production. In addition, the company produced 32 million tons of oil and 10.9 million tons of gas condensate. Gazprom's activities accounted for 10% of Russia's gross domestic product in 2008.