Oil and Natural Gas Corporation Limited, founded in 1956, is an India Government owned oil and gas company headquartered in Dehradun. It is one of the world's largest oil and gas exploration and production companies, and produces around 77% of India's crude oil which is equivalent nearly 30% of the country's total demand and around 81% of its natural gas. It is one of the largest publicly traded companies by market capitalization in India. In the Fortune Global 500 list, it has been ranked 357th of the world's biggest corporations for the year 2012. Currently India Government owns 74.14% equity stake and the rest is with public. It is one of the five Maharatna status companies of India, along with Coal India, IOCL, NTPC and Steel Authority of India.

Oil and Natural Gas Corporation Limited, founded in 1956, is an India Government owned oil and gas company headquartered in Dehradun. It is one of the world's largest oil and gas exploration and production companies, and produces around 77% of India's crude oil which is equivalent nearly 30% of the country's total demand and around 81% of its natural gas. It is one of the largest publicly traded companies by market capitalization in India. In the Fortune Global 500 list, it has been ranked 357th of the world's biggest corporations for the year 2012. Currently India Government owns 74.14% equity stake and the rest is with public. It is one of the five Maharatna status companies of India, along with Coal India, IOCL, NTPC and Steel Authority of India.

Oil and Natural Gas Corporation Limited, founded in 1956, is an India Government owned oil and gas company headquartered in Dehradun. It is one of the world's largest oil and gas exploration and production companies, and produces around 77% of India's crude oil which is equivalent nearly 30% of the country's total demand and around 81% of its natural gas. It is one of the largest publicly traded companies by market capitalization in India. In the Fortune Global 500 list, it has been ranked 357th of the world's biggest corporations for the year 2012. Currently India Government owns 74.14% equity stake and the rest is with public. It is one of the five Maharatna status companies of India, along with Coal India, IOCL, NTPC and Steel Authority of India.