Oil and Natural Gas Corporation Limited (ONGC) is an Indian multinational oil and gas company was founded in year 1956. the main headquarter in Dehradun Uttarakhand, India. it is indians largest gas and oil production company.

Toll Free Number / Customer Care Number:
011 2331 0156.

Email : [email protected]

Corporate Office Address:
Oil and Natural Gas Corporation Limited,
Corporate Office, Jeevan Bharati, Tower – II,
124, Indira Chowk, New Delhi, Delhi 110001

Website : www.ongcindia.com