Chairman and managing director of Reliance Industries Limited Mukesh Ambani, who ranked 19th on Forbes' list of billionaires in 2012, is the richest Indian with an estimated $22.3 billion net worth.

Mukesh, who holds an MBA from Stanford University, joined Reliance in 1981 which his father Dhirubhai Ambani founded.

Reliance is India's largest private sector enterprise and is listed in Fortune Global 500. It is country's most valuable company by market value and second-largest Indian company by turnover. 

Mukesh is married to Nita Ambani, a well-known philanthropist, and the duo has three children, Akash, Anant and Isha.