Following is the list of Top 10 Largest Refining Companies In USA as per Oil and Gas Journal, 2010-11:
| S.No. | Company | Crude Capacity, barrels per calendar day (b/cd)* | No. of Refineries |
| 1 | ConocoPhilips (USA) | 2,226,200 | 13 |
| 2 | ExxonMobil Corp. (USA) | 2,043,000 | 7 |
| 3 | Valero Energy Corp. (USA) | 1,999,660 | 12 |
| 4 | BP PLC (UK) | 1,476,575 | 6 |
| 5 | Marathon Oil Corp. (USA) | 1,188,000 | 7 |
| 6 | Royal Dutch Shell PLC (NL/UK) | 971,250** | 8 |
| 7 | Chevron Corp. (USA) | 941,000 | 5 |
| 8 | PDVSA (Venezuela) | 849,400*** | 4 |
| 9 | Sunoco Inc. (USA) | 825,000 | 4 |
| 10 | Flint Hills Resources (USA) | 816,525 | 3 |
