This is a list of selected petroleum (crude oil) exploration and production companies (petroleum industry) in alphabetical order. This list does not include companies involved in refining and marketing only.

Africa[edit]

• Sonatrach
• Sonangol Group
• National Petroleum Company of the Congo
• Vegas Oil and Gas
• Star Africa Commodities & Minerals Limited
• Arabian Gulf Oil Company
• National Oil Corporation
• Nigerian National Petroleum Corporation
• Sasol
• Sudapet
• Entreprise Tunisienne d’Activites Petroliere
• Madagascar Oil^{[1][better source needed]}

Asia[edit]

• Bahrain Petroleum Company
• Petrobangla
• Myanma Oil and Gas Enterprise
• CNOOC
• Geo-Jade Petroleum
• Greka Exploration and Production Ltd
• PetroChina
• Sinopec
• CITIC Resources
• Shaanxi Yanchang Petroleum
• Sinochem
• Towngas
• Gujarat State Petroleum Corporation
• Oil and Natural Gas Corporation
• Oil India
• Essar Oil
• Reliance Industries
• Cairn India
• MedcoEnergi
• Pertamina
• PT Lapindo Brantas
• National Iranian Oil Company
• North Oil Company
• South Oil Company
• Missan Oil Company
• Midland Oil Company
• Delek Group
• Isramco
• Modiin Energy
• Inpex
• JAPEX
• Nippon Oil
• KazMunayGas
• Kuwait Oil Company
• Consolidated Contractors Company
• Petronas
• Petroleum Development Oman
• Oil and Gas Development Company Limited
• Pakistan Petroleum
• Pakistan Oilfields
• Mari Gas Company
• Petron
• Philippine National Oil Company
• Qatar Petroleum
• Saudi Aramco
• Singapore Petroleum Company
• Ceylon Petroleum Corporation
• Korea National Oil Corporation
• Korea Gas Corporation
• CPC Corporation, Taiwan
• PTT
• Thai Oil
• Türkiye Petrolleri Anonim Ortaklığı
• Çalık Enerji
• ADNOC
• ENOC
• Petrovietnam
• Vietsovpetro

Europe[edit]

• OMV
• RAG
• Azerbaijan International Operating Company
• State Oil Company of Azerbaijan Republic
• Nobel Oil Group
• Petrol AD
• INA – Industrija Nafte
• Moravské naftové doly
• DONG Energy
• Maersk Oil
• Atlantic Petroleum
• Total S.A.
• RWE Dea
• Wintershall
• Hellenic Petroleum
• Motor Oil Hellas
• MOL Group
• Maxol
• Anonima Petroli Italiana
• Edison
• Edoardo Raffinerie Garrone
• Eni
• Saras S.p.A.
• Ascom Group
• / Royal Dutch Shell
• Bayerngas
• DNO International
• Det Norske Oljeselskap
• InterOil
• Noreco
• Norse Energy
• Rocksource
• Statoil
• / Questerre
• Grupa Lotos
• PGNiG
• PKN Orlen
• Galp Energia
• Partex Oil and Gas
• OMV Petrom
• Rompetrol
• Bashneft
• Gazprom Neft
• Krasnoleninsky Refinery
• Lukoil
• Rosneft
• Russneft
• Sibir Energy
• Surgutneftegas
• Tatneft
• Naftna Industrija Srbije
• Compañía Española de Petróleos
• Repsol
• Lundin Petroleum
• Ukrnafta
• Green Dragon Gas
• BG Group
• BP
• Cairn Energy
• Centrica
• / Perenco
• Premier Oil
• Salamander Energy
• Tullow Oil

North America[edit]

• Canadian Natural Resources Limited
• Crescent Point Energy
• Encana
• Husky Energy
• Imperial Oil
• Laricina Energy
• Nalcor Energy
• Nexen
• Pacific Rubiales Energy
• Penn West Exploration
• PetroKazakhstan
• Suncor Energy
• Syncrude
• Talisman Energy
• ShaMaran Petroleum Corp.
• Cupet
• Petróleos Mexicanos
• Petrotrin
• Anadarko Petroleum Corporation
• Apache Corporation
• Blacksands Pacific
• Chesapeake Energy Corporation
• Chevron Corporation
• ConocoPhillips
• Continental Resources
• Devon Energy
• EOG Resources
• ExxonMobil
• Greka Energy
• Hess Corporation
• HKN, Inc.
• Koch Industries
• Laredo Petroleum
• Linn Energy
• Marathon Oil
• Murphy Oil
• Occidental Petroleum
• Plains Exploration & Production
• SandRidge Energy
• Shell Oil Company
• Vaalco Energy
• Venoco
• XTO Energy
• Tesoro
• Breitling Energy Corporation

Oceania[edit]

• AWE
• BHP Billiton
• Santos
• Woodside Petroleum
• Todd Energy
• Origin Energy

South America[edit]

• Bridas Corporation
• Enarsa
• YPF
• YPFB
• Petrobras
• OGX
• Empresa Nacional del Petróleo
• Empresas Copec
• Ecopetrol
• Petroecuador
• Petroperú
• ANCAP
• Petróleos de Venezuela