Oil and gas exploration
- BHP Billiton
- MOL
- Oil and Gas Development Company
- OMV
- Pakistan Oilfields
- Pakistan Petroleum
- PETRONAS
- Schlumberger
- Weatherford
Oil and Gas marketing
- Attock Petroleum
- Pakistan State Oil
- Shell Pakistan
- Sui Southern Gas Company
- Sui Northern Gas Pipelines
Refineries
- Pakistan Refinery Limited
- Pak-Arab Refinery
- Indus Oil Refinery Ltd (not yet operational)
- Khalifa Coastal Refinery (not yet operational)
- Trans Asia Refinery (not yet operational)