Founder-chairman of the $1 billion (revenues) Sonalika Group, he gave up a career in insurance to start an agricultural equipment and supplies business in 1969. Today, his International Tractors is the country's third-largest tractor maker with the Blackstone Group as a key investor. Sales were up 28 percent propelling Mittal into the billionaire ranks. Three generations of Mittals work in the privately-held family enterprise: While sons Amrit, Sagar and Deepak are in charge of operations, grandsons Sushant and Raman oversee marketing.
Fast Fact: Daughter Usha Sangwan is managing director of the state-owned Life Insurance Corporation of India. Mittal is a collector of old coins.