Indian Oil Corporation (IOC): It is a state-owned oil and gas company, consistently appearing on the Fortune Global 500 list as one of the largest corporations by revenue.
Reliance Industries: India's largest private sector company, involved in diverse sectors like petrochemicals, refining, and telecommunications, has also consistently been part of the Fortune 500 list.
Hindustan Petroleum Corporation Limited (HPCL): Another major player in the oil and gas sector, HPCL, has also been featured on the list.