The following is a list of notable companies in the petroleum industry that are engaged in petroleum exploration and production. The list is in alphabetical order by continent and then by country. This list does not include companies only involved in refining and marketing.
| Africa | |
|---|---|
| Company | Country |
| Aiteo |  Nigeria |
| Sonatrach |  Algeria |
| Sonangol Group |  Angola |
| Société Nationale des Pétroles du Congo |  Congo |
| Vegas Oil and Gas |  Egypt |
| Star Africa Commodities & Minerals Limited |  Ghana |
| Arabian Gulf Oil Company |  Libya |
| National Oil Corporation | |
| Nigerian National Petroleum Corporation | Nigeria |
| Lekoil Limited | |
| PetroSA |  South Africa |
| Sasol | |
| Sudapet |  Sudan |
| Entreprise Tunisienne d'Activités Pétrolières |  Tunisia |
| Madagascar Oil |  Madagascar |
| Asia | |
| Company | Country |
| Azerbaijan International Operating Company |  Azerbaijan |
| SOCAR | |
| Nobel Oil Group | |
| Brunei Shell Petroleum |  Brunei |
| Bahrain Petroleum Company |  Bahrain |
| Petrobangla |  Bangladesh |
| Myanma Oil and Gas Enterprise |  Burma |
| CEFC China Energy |  China |
| CNOOC | |
| China National Petroleum Corporation | |
| CITIC Resources | |
| Geo-Jade Petroleum | |
| Shaanxi Yanchang Petroleum | |
| Sinochem | |
| Sinopec | |
| Southernpec | |
| The Hong Kong and China Gas Company |  Hong Kong |
| United Energy Group | |
| Gujarat State Petroleum Corporation |  India |
| Oil and Natural Gas Corporation | |
| Indian Oil Corporation Limited | |
| Essar Oil | |
| Reliance Industries | |
| Cairn India | |
| MedcoEnergi |  Indonesia |
| Pertamina | |
| National Iranian Oil Company |  Iran |
| North Oil Company |  Iraq |
| South Oil Company | |
| Missan Oil Company | |
| Midland Oil Company | |
| Delek |  Israel |
| Isramco | |
| Modiin Energy | |
| Inpex |  Japan |
| JAPEX | |
| Nippon Oil | |
| KazMunayGas |  Kazakhstan |
| Kuwait Oil Company |  Kuwait |
| Consolidated Contractors Company |  Lebanon |
| Petronas |  Malaysia |
| Petroleum Development Oman |  Oman |
| Oil and Gas Development Company |  Pakistan |
| Pakistan Petroleum | |
| Pakistan Oilfields | |
| Mari Petroleum Company Limited | |
| Petron Corporation |  Philippines |
| Philippine National Oil Company | |
| Qatar Petroleum |  Qatar |
| Saudi Aramco |  Saudi Arabia |
| Singapore Petroleum Company |  Singapore |
| Ceylon Petroleum Corporation |  Sri Lanka |
| Korea National Oil Corporation |  South Korea |
| Korea Gas Corporation | |
| CPC Corporation |  Taiwan |
| PTT |  Thailand |
| Thai Oil | |
| Türkiye Petrolleri Anonim Ortaklığı |  Turkey |
| Çalık Enerji | |
| Abu Dhabi National Oil Company |  United Arab Emirates |
| Emirates National Oil Company | |
| Uzbekneftegaz |  Uzbekistan |
| Petrovietnam |  Vietnam |
| Vietsovpetro | |
| Europe | |
| Company | Country |
| OMV |  Austria |
| RAG | |
| Petrol AD |  Bulgaria |
| INA – Industrija Nafte |  Croatia |
| Moravské naftové doly |  Czech Republic |
| Ørsted A/S |  Denmark |
| Atlantic Petroleum |  Faroe Islands |
| Neste |  Finland |
| Total S.A. |  France |
| Engie | |
| Perenco | France |
 United Kingdom | |
| DEA AG |  Germany |
| Wintershall | |
| Hellenic Petroleum |  Greece |
| MOL Group |  Hungary |
| Maxol |  Ireland |
| Anonima Petroli Italiana |  Italy |
| Edison | |
| Edoardo Raffinerie Garrone | |
| Eni | |
| Saras S.p.A. | |
| Ascom Group |  Moldova |
| Royal Dutch Shell |  Netherlands/ |
| United Kingdom | |
| Makpetrol |  North Macedonia |
| Aker BP |  Norway |
| Bayerngas | |
| DNO ASA | |
| Equinor | |
| InterOil | |
| Noreco | |
| Norse Energy | |
| Rocksource | |
| Grupa Lotos |  Poland |
| PGNiG | |
| PKN Orlen | |
| Galp Energia |  Portugal |
| Partex Oil and Gas | |
| OMV Petrom |  Romania |
| Rompetrol | |
| Bashneft |  Russia |
| Gazprom Neft | |
| Itera | |
| Lukoil | |
| Novatek | |
| Rosneft | |
| Rusneftegaz | |
| Russneft | |
| Sakhalin Energy | |
| Surgutneftegas | |
| Tatneft | |
| Naftna Industrija Srbije |  Serbia |
| Compañía Española de Petróleos |  Spain |
| Repsol | |
| Lundin Petroleum |  Sweden |
| Ukrnafta |  Ukraine |
| BG Group | United Kingdom |
| BP | |
| Cairn Energy | |
| Centrica | |
| Dana Petroleum | |
| Premier Oil | |
| Tullow Oil | |
| North America | |
| Company | Country |
| ARC Resources | .svg.png){kind=small} Canada |
| Baytex Energy | |
| Canadian Natural Resources | |
| Cenovus Energy | |
| Crescent Point Energy | |
| Enerplus | |
| First Calgary Petroleums | |
| Frontera Energy | |
| Husky Energy | |
| Imperial Oil | |
| MEG Energy | |
| Nalcor Energy | |
| Obsidian Energy | |
| PetroKazakhstan | |
| Questerre | |
| Ridgeback Resources | |
| Suncor Energy | |
| Syncrude | |
| ShaMaran Petroleum | |
| Vermilion Energy | |
| Cuba Petróleo Union |  Cuba |
| Uno |  Honduras |
| Pemex |  Mexico |
| Petrotrin |  Trinidad and Tobago |
| Antero Resources |  United States |
| Apache Corporation | |
| Berry Petroleum Company | |
| Blacksands Pacific | |
| Cabot Oil & Gas | |
| California Resources Corporation | |
| Chesapeake Energy | |
| Chevron Corporation | |
| Cimarex Energy | |
| CNX Resources | |
| ConocoPhillips | |
| Continental Resources | |
| Denbury Resources | |
| Devon Energy | |
| Diamondback Energy | |
| EOG Resources | |
| EQT | |
| ExxonMobil | |
| Greka Energy | |
| Hess Corporation | |
| HKN, Inc. | |
| Koch Industries | |
| Laredo Petroleum | |
| Marathon Oil | |
| Murphy Oil | |
| Oasis Petroleum | |
| Occidental Petroleum | |
| Ovintiv | |
| Pioneer Natural Resources | |
| Range Resources | |
| SandRidge Energy | |
| Shell Oil Company | |
| SM Energy | |
| Southwestern Energy | |
| Vaalco Energy | |
| Whiting Petroleum Corporation | |
| Oceania | |
| Company | Country |
| Australian Worldwide Exploration (AWE) | .svg.png){kind=small} Australia |
| BHP | |
| Oil Search |  Papua New Guinea |
| Australia | |
| Origin Energy | |
| Santos Limited | |
| Woodside Petroleum | |
| Todd Corporation |  New Zealand |
| South America | |
| Company | Country |
| Bridas Corporation |  Argentina |
| Pan American Energy | |
| IEASA | |
| YPF | |
| YPFB |  Bolivia |
| Petrobras |  Brazil |
| OGX | |
| Empresa Nacional del Petróleo |  Chile |
| Empresas Copec | |
| Ecopetrol |  Colombia |
| Petroecuador |  Ecuador |
| Petropar |  Paraguay |
| Petroperú |  Peru |
| ANCAP |  Uruguay |
| PDVSA |  Venezuela |