Mukesh Ambani has emerged the wealthiest person in India with a net worth of $32 billion, as the number of Indian billionaires in Forbes' India Rich List this year has nearly doubled to 52, thanks to the rebound in stock markets.

London-based Lakshmi N Mittal with $30 billion, Anil Ambani with $17.5 billion, Azim Premji with $14.9 billion, Shashi and Ravi Ruia with $13.6 billion and KP Singh with $13.5 billion make up the top five billionaires on this year's list.