Oil and Natural Gas Corporation (ONGC) The company profile, contact number, contact address and services offered are given below. Oil and Natural Gas Corporation (ONGC) Registered Office , Company statement, financial statement Oil and Natural Gas Corporation (ONGC) Registered Office Address: Jeevan Bharati Bulldag. II II 124 Indira Chowk New Delhi: 110001 Delhi, India. Oil and Natural Gas Corporation (ONGC) Phone Number: (11) 23301000 Website of Oil and Natural Gas Corporation (ONGC) : www.ongcindia.com Oil and Natural Gas Corporation (ONGC) Financial Statement : Number of employees - 5001 and above Turnover in Crs - 5000+ Crs Sector- Government Sector