| Company Name | Entity type | Parent/Subsidiary/Independent | Headquarters | No. of Employees | Annual Revenue ($M) | |
|---|---|---|---|---|---|---|
| Turkiye Petrol Rafinerileri AS | Public | Subsidiary (of Koc Holding AS) | Turkey | 6,005 | 29,108 | |
| China National Petroleum Corp | Government | Parent | China | XYZ | 505,323 | |
| China Petroleum & Chemical Corp | Public | Subsidiary (of China Petrochemical Corp) | China | 374,791 | 493,159 | |
| Marathon Petroleum Corp | Public | Parent | United States of America | 17,800 | 178,891 | |
| Bharat Petroleum Corp Ltd | Public | Parent | India | 8,713 | 67,994 | |
| Turkish Petroleum International Co Ltd | Private | Subsidiary (of Turkiye Petrolleri Anonim Ortakligi ) | Turkey | XYZ | XYZ | |
| Hindustan Petroleum Corp Ltd | Public | Subsidiary (of Oil and Natural Gas Corp Ltd) | India | 8,504 | 59,449 | |
| Occidental Petroleum Corp | Public | Parent | United States of America | 11,973 | 36,787 | |
| Turkish Petroleum Corp | Private | Independent | Turkey | XYZ | XYZ | |
| Turkish Petroleum Overseas Co | Private | Subsidiary (of Turkiye Petrolleri Anonim Ortakligi ) | Libya | XYZ | XYZ | |
| BP Plc | Public | Parent | United Kingdom | 67,600 | 241,392 | |
| Vietnam National Petroleum Group | Public | Parent | Vietnam | 18,942 | 12,995 | |
| China Petroleum Engineering Corp | Public | Parent | China | XYZ | XYZ | |
| Chennai Petroleum Corp Ltd | Public | Subsidiary (of Indian Oil Corp Ltd) | India | 1,466 | 11,585 | |
| Turk Hava Yollari Anonim Ortakligi | Public | Parent | Turkey | 52,414 | 18,426 | |
| Star Petroleum Refining PCL | Public | Subsidiary (of Chevron Corp ) | Thailand | XYZ | XYZ | |
| Independent Petroleum Group | Public | Parent | Kuwait | XYZ | XYZ | |
| QatarEnergy | Government | Parent | Qatar | XYZ | 52,256 | |
| PTT Public Co Ltd | Public | Parent | Thailand | 30,628 | 96,213 | |
| CPC Corp | Government | Parent | Taiwan | 16,682 | 41,022 | |
| Callon Petroleum Co | Public | Parent | United States of America | 354 | 3,231 | |
| Ceylon Petroleum Corp | Government | Parent | Sri Lanka | XYZ | XYZ | |
| Yanchang Petroleum International Ltd | Public | Parent | Hong Kong | 208 | 3,823 | |
| Attock Petroleum Ltd | Public | Pakistan | XYZ | XYZ | ||
| Turkiye Petrolleri Anonim Ortakligi | Government | Parent | Turkey | XYZ | XYZ | |
| Elinoil Hellenic Petroleum Company SA | Public | Independent | Greece | XYZ | XYZ | |
| Kuwait Foreign Petroleum Exploration Co | Private | Subsidiary (of Kuwait Petroleum Corp) | Kuwait | XYZ | 3,421 | |
| Petroleum Traders Corporation | Private | Independent | United States of America | XYZ | XYZ | |
| Gujarat State Petroleum Corp Ltd | Private | Subsidiary (of Gujarat State Investment Corporation ) | India | XYZ | 3,326 | |
| Aldrees Petroleum & Transport Services Co | Public | Independent | Saudi Arabia | XYZ | XYZ | |
| Woodside Energy Group Ltd | Public | Parent | Australia | 4,376 | 16,817 | |
| Phoenix Petroleum Philippines Inc | Public | Parent | Philippines | XYZ | XYZ | |
| Preem AB | Private | Subsidiary (of Corral Petroleum Holdings AB ) | Sweden | 1,557 | 15,875 | |
| Turkish Airlines | Institution | Parent | Turkey | XYZ | XYZ | |
| Pakistan Petroleum Ltd | Public | Parent | Pakistan | 2,594 | 1,412 | |
| Jordan Petroleum Refinery Co Ltd | Public | Independent | Jordan | XYZ | XYZ | |
| Japan Petroleum Exploration Co Ltd | Public | Parent | Japan | 1,617 | 2,486 | |
| Shell International Petroleum Co Ltd | Private | Subsidiary (of Shell plc ) | United Kingdom | XYZ | XYZ | |
| Sunshine Turkish Homes | Private | Independent | Turkey | XYZ | XYZ | |
| Turkish Bank AS | Private | Parent | Turkey | XYZ | XYZ | |
| International Petroleum Corp | Public | Parent | Canada | 131 | 1,136 | |
| Helleniq Energy Holdings SA | Public | Parent | Greece | 3,519 | 15,256 | |
| Turkish Neonatology Society | Institution | Independent | Turkey | XYZ | XYZ | |
| Turkish Air Force | Government | Independent | Turkey | XYZ | XYZ | |
| Turkish Airlines Ethiopia | Private | Independent | Ethiopia | XYZ | XYZ | |
| RAK Petroleum Plc | Private | Subsidiary (of RAK Investment Auhtority ) | United Kingdom | XYZ | XYZ | |
| Turkish League Against Rheumatism | Institution | Independent | Turkey | XYZ | XYZ | |
| Turkish Republic State Railways | Government | Parent | Turkey | XYZ | XYZ | |
| Turkish Airlines, Inc. | Private | Independent | Turkey | XYZ | XYZ | |
| Turkish Naval Forces | Government | Independent | Turkey | XYZ | XYZ |
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