A number of employers in the field of oil and gas refining
- Bandar Abbas Oil Refining Company
- Shiraz Oil Refining Company
- Kermanshah Oil Refining Company
- Fajr Jam Gas Refining Company
- Ilam Gas Refining Company
- Parsian Gas Refining Company, Tehran Oil Refining Company
- Abadan Oil Refining Company
- Persian Gulf Star Oil Company
- Tabriz Oil Refining Company
- Lawan Oil Refining Company
- Sepahan Oil Company
- Shahid Hashminejad Gas Refining Company
- J. Oil Refining Company
- Sarkhun and Qeshm Gas Refining Company
- Shazand Imam Khomeini Oil Refining Company
- Isfahan Oil Refining Company
- Iranol Oil Company
- Aftab Oil Refining Company
