National oil and gas companies

PJSC Gazprom () is a Russian majority state-owned multinational energy corporation headquartered in the Lakhta Center in Saint Petersburg. The name is a contraction of the Russian words (, gas industry). In January 2022, Gazprom displaced Sberbank from the first place in the list of the largest companies in Russia by market capitalization. In 2023, the company's revenue amounted to 8.5 trillion rubles, a significant decline from the 11.7 trillion rubles it reported in 2022.

Saudi Arabian state-owned petroleum company

Petróleo Brasileiro S.A., better known by and trading as the portmanteau Petrobras (), is a Brazilian majority state-owned multinational corporation in the petroleum industry, which is headquartered in Rio de Janeiro. The company's name translates to Brazilian Petroleum Corporation.

Petroliam Nasional Berhad, commonly known as PETRONAS (stylised in all caps), is a Malaysian multinational oil and gas company headquartered in Kuala Lumpur. Established in 1974, it is a legal entity incorporated under the Malaysian Companies Act 1965 and reports to the company's Board of Directors. Petronas is vested with all oil and gas resources in Malaysia and is entrusted with the responsibility of developing and adding value to these resources.

PJSC Rosneft Oil Company ( stylized as ROSNEFT) is a Russian integrated energy company headquartered in Moscow. Rosneft specializes in the exploration, extraction, production, refining, transport, and sale of petroleum, natural gas, and petroleum products. The company is controlled by the Russian government through the Rosneftegaz holding company. Its name is a portmanteau of the Russian words ().

Eni S.p.A. (; former legal name Ente nazionale idrocarburi "National Hydrocarbons Board") is an Italian multinational energy company. It is considered one of the "supermajor" oil companies in the world, with a market capitalization of €48 billion, as of 31 December 2025. The Italian government owns a 30.5% golden share in the company, 1.99% held through the Ministry of Economy and Finance and 28.5% through the Cassa Depositi e Prestiti. The company is a component of the Euro Stoxx 50 stock market index.

PetroChina Company Limited () is a Chinese oil and gas company and is the listed arm of state-owned China National Petroleum Corporation (CNPC), headquartered in Dongcheng District, Beijing. The company is currently Asia's largest oil and gas producer. Traded in Hong Kong and New York, the mainland enterprise announced its plans to issue stock in Shanghai in November 2007, and subsequently entered the constituent of SSE 50 Index. In the 2020 Forbes Global 2000, PetroChina was ranked as the 32nd-largest public company in the world.

thumb|Sinopec in Hong Kong thumb|Sinopec in Hangzhou, [[Zhejiang]] thumb|Entrance to Shanghai Chemical Industry Park where Sinopec operates

Equinor ASA (formerly Statoil and StatoilHydro) is a Norwegian multinational energy company headquartered in Stavanger, Norway. It is primarily a petroleum company operating in 36 countries with additional investments in renewable energy and lithium mining. In the 2020 Forbes Global 2000, Equinor was ranked as the 169th-largest public company in the world. In 2023, the company was ranked 52nd in the same list. the company has 21,126 employees.

Chinese state-owned oil and gas corporation

Petróleos de Venezuela, S.A. (PDVSA, ; English: Petroleum of Venezuela) is the state-owned oil and gas company of Venezuela. It has activities in exploration, production, refining and exporting of oil, as well as exploration and production of natural gas. Since its founding on January 1, 1976, with the nationalization of the Venezuelan oil industry, PDVSA has dominated the petroleum industry of Venezuela, one of the world's largest oil exporters.

Pemex (a portmanteau of Petróleos Mexicanos, which translates to Mexican Petroleum in English; ) is the Mexican state-owned petroleum corporation managed and operated by the Mexican government. It was formed in 1938 by nationalization and expropriation of all private oil companies in Mexico at the time of its formation, making PEMEX an enduring symbol of Mexican nationalism. Pemex had total assets worth $101.8 billion in December 2019 and as of 2009 was Latin America's second largest enterprise by annual revenue, surpassed only by Petrobras (the Brazilian national oil company). The company is

The State Oil Company of the Republic of Azerbaijan (), largely known by its abbreviation SOCAR, is a fully state-owned national oil and gas company headquartered in Baku, Azerbaijan. The company produces oil and natural gas from onshore and offshore fields in the Azerbaijani segment of the Caspian Sea. It operates the country's only oil refinery, one gas processing plant and runs several oil and gas export pipelines throughout the country. It owns fuel filling station networks under the SOCAR brand in Azerbaijan, Turkey, Georgia, Ukraine, Romania, Switzerland, and Austria.

Naftogaz of Ukraine (, Naftogaz Ukrainy; literally "Naphtha-Gas of Ukraine") is the largest national oil and gas company of Ukraine. It is a state-owned company subordinated to the Government of Ukraine. The vertical-integrated company carries out a complete cycle of exploration operations and development of deposits, operating and exploratory drilling, extraction, transportation, and refinement of natural gas and crude oil, supply of natural and liquefied gas to consumers.

Orlen SA (formerly PKN Orlen SA (), commonly known as Orlen is a Polish multinational oil refiner, petrol retailer and natural gas trader headquartered in Płock, Poland. The company's subsidiaries include the main oil and gas companies of the Czechia and Lithuania, Unipetrol and Orlen Lietuva, respectively.

QatarEnergy () is the state-owned national petroleum and natural gas company of Qatar. The company operates all oil and gas related activities in Qatar, including exploration, production, refining, transport, and storage. The President and CEO is Saad Sherida al-Kaabi, who is also the minister of state for energy affairs.

national oil company in China

Sonatrach () is the national state-owned oil company of Algeria. Founded in 1963, it is known today to be the largest company in Africa with 154 subsidiaries, and often referred as the first African oil "major". In 2021, Sonatrach was the seventh largest gas company in the world.

KazMunayGas (KMG) () is the state-owned oil and gas company of Kazakhstan. It was founded in 2002 by merging CJSC Kazakhoil and CJSC Oil&Gas Transportation.

oil and gas company of Iran

thumb|alt=Low angle shot of a large canopy over fuel pumps on a sunny day against a white-clouded sky|Pertamina fuel station in Bali PT Pertamina (Persero) is an Indonesian state-owned oil and natural gas corporation, headquartered in Jakarta. It was created in August 1968 by the merger of Pertamin (established 1961) and Permina (established in 1957). In 2020, the firm was the third-largest crude oil producer in Indonesia behind US-based companies ExxonMobil's Mobil Cepu Ltd. and Chevron Pacific Indonesia. According to the 2020 Fortune Global 500 list, Pertamina is the largest company in Indon

state-owned petroleum company

integrated energy company based in Fredericia, Denmark

YPF S.A. (, formerly ''''''; English: "Fiscal Oilfields") is a vertically integrated, majority state-owned Argentine energy company, engaged in oil and gas exploration and production, and the transportation, refining, and marketing of gas and petroleum products. In the 2020 Forbes Global 2000, YPF was ranked as the 1360th largest public company in the world.

Croatian oil company

Serbian petroleum company

state owned oil corporation in Kuwait

Polish company in the energy and oil sector

Angolan oil and gas company

Ecopetrol, formerly known as Empresa Colombiana de Petróleo S.A. () is the largest and primary petroleum company in Colombia. As a result of its continuous growth, Ecopetrol forms part of the Fortune Global 500 and was ranked 346. In the 2020 Forbes Global 2000, Ecopetrol was ranked as the 313th -largest public company in the world. It was ranked 303 in 2012 by CNN Money.

petroleum organization in Thailand

The Nigerian National Petroleum Company (NNPC) Limited is a state-owned oil company in Nigeria. Still a fully owned government company, it was transformed from a corporation into a limited liability company in July 2022. NNPC Limited is the only entity licensed to operate in the country's petroleum industry. It partners with foreign oil companies to explore Nigeria's fossil fuel resources. The NNPC, with an asset of $153B (USD), is the largest national oil company in Africa. The company boasts of extensive infrastructure and investment in the downstream, midstream and upstream of the Nigerian

South Korean national oil and gas company

Petróleos del Perú (), better known as Petroperú, is a Peruvian state-owned enterprise and private law dedicated to the transportation, refining, distribution, and commercialization of fuels and other petroleum products. It has been owned by the State of Peru since 1969, is considered among the taxpayers to the treasury, and currently employs more than 2,500 people. Petroperú invests in education, health, and other sustainable development projects throughout the Peruvian territory.

Taiwan oil company

Petrovietnam (PVN), formally the Vietnam National Industry - Energy Group () and formerly the Vietnam Oil and Gas Group ( or ), is the state-owned national oil, gas and energy industry corporation of Vietnam. Petrovietnam has developed rapidly since it was established in 1975, and its activities, through its various companies and wholly owned subsidiaries, now cover all the operations from oil and gas exploration and production to storage, processing, transportation, distribution and services. Wholly owned by the Vietnamese central government, it is responsible for all oil and gas resources in

Iranian Oil Company

Omani state-owned oil and gas company

national oil investment company of Oman

EP Petroecuador (Empresa Estatal Petróleos del Ecuador; Empresa Pública Petroecuador; meaning: State Petroleum Company of Ecuador) is the national oil company of Ecuador. Ecuador is a member of the Organization of the Petroleum Exporting Countries (OPEC) and, although it is the smallest member, the country produced 531,000 barrels of crude oil per day in 2019. The oil corporation is a significant part of the Ecuadorian economy. The petroleum industry has expanded to the production of refined commodities such as gasoline, liquefied petroleum, and jet fuel. The government of Ecuador is highly de

The national holding company Uzbekneftegaz (, ) is a state-owned holding company of Uzbekistan's oil and gas industry.

Albpetrol is an Albanian upstream petroleum production and marketing company, which also monitors state petroleum agreements in Albania. Its stock is owned by the Albanian state. The company is headquartered in Patos and has a representative office in Tirana. The CEO of Albpetrol is Mr. Baftjar Zeqaj. Albpetrol is managing more than 1200 oil wells in the existing settlements of Patos, Ballsh, Karbunarë, Kuçovë, Gorisht-Kocul, Cakran-Mollaj and Amonicë.

Compañía Arrendataria del Monopolio del Petróleo, S.A. (Campsa) was the state-owned petroleum products company of Spain. Created in the 1920s during General Primo de Rivera's dictatorship, it was dissolved in 1992 owing to the demands of the European Union. Its assets were distributed to the largest private petroleum companies in the Spanish market at the time, which were mainly Repsol, Cepsa and BP. The rights to the Campsa brand were given to Repsol. thumb|Campsa service station in Valladolid

Iraqi government-owned oil company

Türkmengaz is the national gas company of Turkmenistan. It was established by a presidential decree reorganising parts of the former Ministry of Oil and Gas in July 1996. From January to November 2020, Türkmengaz had US$4.13bn in revenue. It is the largest gas company in Central Asia. The chairman of the company, with rank of minister of state, is Batyr Amangeldiýewiç Amanow.

Libyan state-owned oil company

Pakistani state-owned oil company

Pakistani oil and gas company

Yacimientos Petrolíferos Fiscales Bolivianos (YPFB) is a Bolivian state-owned enterprise dedicated to the exploration, exploitation, refining, industrialization, distribution and commercialization of oil, natural gas and derived products. It was created on December 21, 1936 under a government decree during the presidency of David Toro. YPFB is one of the biggest corporations in Bolivia.

Uruguayan state-owned fuel company

national oil company of Egypt

as opposed to IOC, which stands for International Oil Company

Argentine energy company

company

PetroSA (The Petroleum, Oil and Gas Corporation of South Africa (SOC) Ltd.) is the national oil and gas company (NOC) of South Africa.

Petrolimex (PLX), formally the Vietnam National Petroleum Group (), is an industry group in Vietnam. Besides working in petroleum and natural gas, the company has significant subsidiaries active in the fields of insurance, transport and trading. It, in competition with PetroVietnam (PVN), is Vietnam's leading oil and gas producing company. The company's main offices are located in Hanoi.

government-owned energy corporation based in Dubai, United Arab Emirates

Nunaoil was a national oil company of Greenland founded in 1985 as an equal partnership between the Greenland Home Rule Government and DONG Energy It is a non-paying partner in all licenses around Greenland. It handled oil exploration, while import of oil for local need is handled by Nukissiorfiit. Due to the decision of Greenland's Government in December 2022, Nunaoil has been reconstructed and renamed to NunaGreen in an effort to cease oil exploration and focus to renewable energy.

state-Owned Oil company based in Ghana

The state-owned Public JSC Ukrgasvydobuvannya () is the largest Ukrainian gas producer. It is a vertically integrated company with a complete production cycle: from exploration of gas and gas condensate reserves, field development, transportation, gas processing and condensate and oil refining to sales.