Oil and Natural Gas Corporation Limited (ONGC) is an Indian multinational oil and gas company headquartered in Dehradun, Uttarakhand, India.

As you asking for ownership so I am telling Oil and Natural Gas Corporation Limited (ONGC) is a Public Sector Undertaking (PSU) of the Government of India, under the administrative control of the Ministry of Petroleum and Natural Gas.

As on 31 March 2013, Government of India held around 69% equity shares in ONGC. Over 480,000 individual shareholders hold approx. 1.65% of its shares.

Life Insurance Corporation of India is the largest non-promoter shareholder in the company with 7.75% shareholding.

Shareholders (as on 31-Mar-2013) Shareholding
Promoter – Government of India 68.94%
Government Companies 10.09%
Banks, Financial Inst. & Insurance companies 09.69%
Foreign Institutional Investors (FII) 06.27%
Private Corporate Bodies 01.83%
Individual shareholders 01.65%
Mutual Funds and UTI 01.13%
NRI/Employees 00.11%
Total 100.0%

Company profile:
Type Public Sector Undertaking
Traded as NSE: ONGC
BSE: 500312
BSE SENSEX Constituent
CNX Nifty Constituent
Industry Oil and Gas
Founded 14 August 1956
Headquarters Tel Bhavan, Dehradun, Uttarakhand, India
Key people Dinesh Kumar Sarraf
(Chairman & MD)
Products Petroleum, natural gas, and other petrochemicals
Revenue 139,364.35 crore (US$21 billion) (2016)
Profit 14,300.93 crore (US$2.1 billion) (2016)
Total equity 4,277.76 crore (US$640 million)
Owner Government of India
Number of employees 33,560 (1st Aug 2015)
Divisions MRPL
ONGC Videsh Ltd.