- Arbusto Energy
- Anadarko, USA
- BHP Billiton, Australia
- BP, UK
- Chevron, USA
- Citgo, USA
- ConocoPhillips, USA
- Ecopetrol, Colombia
- ENI, Italy
- Exxon Mobil, USA
- Gulf Oil, USA
- Husky Energy, Canada
- Irving Oil, Canada
- Koch Oil
- Kerr McGee, USA
- Lukoil, Russia
- Marathon, USA
- Norsk Hydro, Norway
- PDVSA, Venezuela
- Petrobras, Brazil
- Petroleos Mexicanos, México
- Petro Canada, Canada
- Petro Peru, Peru
- Petro China, China
- Petrotrin, Trinidad and Tobago
- Petronas, Malaysia
- Qatar Petroleum
- Repsol-YPF, Spain
- Royal Dutch Shell, Netherlands, UK
- Santos Limited, Australia
- Saudi Aramco, Saudi Arabia
- Sinclair Oil Corporation, USA
- Sinopec, China
- Sonangol, Angola
- Statoil, Norway
- Talisman Energy, Canada
- Teikoku Oil, Japan
- Total, France
- Woodside, Australia
- YPF, Argentina
- YPFB, Bolivia
- YUKOS, Russia
- IOC, India
- ONGC, India
Petroleum companies, list of
Category:Petroleum