Oil and Natural Gas Corporation Ltd (ONGC) is a leading Indian multinational public sector company, established on August 14, 1956, by the Government of India. It is one of the largest oil and gas exploration and production companies globally, significantly contributing to India's energy sector and economic growth. ONGC operates as an integrated oil and gas corporation, managing the entire hydrocarbon value chain, including exploration, production, refining, and marketing of petroleum products.

The company has made major oil discoveries in India, such as in the Cambay basin and the Mumbai High offshore field. It also has a strong international presence through its subsidiary, ONGC Videsh Limited, which oversees global petroleum projects. ONGC produces crude oil and natural gas and holds a majority stake in Hindustan Petroleum Corporation Limited (HPCL), enhancing its capabilities in refining and marketing. With a diverse customer base, ONGC plays a vital role in ensuring energy security and supporting economic development in India.