Reliance Group founded by Shri Dhirubhai H. Ambani (1932-2002) is India's largest business house with total revenues of Rs 80,000 crores (US$ 16.8 billion), cash profit of over Rs 9,800 crores (US$ 2.1 billion), net profit of over Rs 4,700 crores (US$ 990 million) and exports of Rs 11,900 crores (US$ 2.5 billion).

The group's activities span exploration and production (E&P) of oil and gas, refining and marketing, petrochemicals (polyester, polymers, and intermediates), textiles, financial services and insurance, power, telecom and infocom initiatives. Reliance emerged as India's Most Admired Business House, for the second successive year in a TNS-Mode survey for 2002.

The Reliance Group Companies include: Reliance Industries Limited, Reliance Capital Limited, Reliance Industrial Infrastructure Limited, Reliance Telecom Limited, Reliance Infocomm Limited, Reliance General Insurance Company Limited, Indian Petrochemicals Corporation Ltd. and BSES Limited.