IOC tops the chart with an annual revenue of Rs 4,51,911 crore, while Mukesh Ambani-led RIL's full-year revenue is Rs 3,82,565 crore.
Bharat Petroleum (BPCL) is ranked fifth with an annual revenue of Rs 2,40,367 crore. It had grabbed the third spot in last year's ranking.
The list, which has been compiled by global business magazine Fortune's Indian edition since 2010, said the total revenue of firms has grown a merely 2.7 per cent and profits fell 5.9 per cent compared with 2014.
"While the total revenue of Fortune India 500 companies has nearly doubled from Rs 38,16,000 crore in 2010 to Rs 71,27,000 crore in 2015, the same cannot be said of profits, which went up by a meagre 3.6 per cent over the period," the magazine noted.
Others in the top 10 are
According to Fortune India, "While the overall scene does not seem too promising, individual companies are swimming against the tide to deliver value to customers and shareholders."
Among others in the list are
The ranking is based on total revenues of the organisation. Other individual parameters include year-on-year change in total revenues, net operating income, profits, assets, networth, dividend, among others.
Fortune ranks top players across different sectors ranging from banking, telecommunications, automobiles, consumer durables, pharma, FMCG, infrastructure, media, oil and gas, power, real estate, retail and among others.
(Image credit: BCCL)