India has 52 billionaires :) with Mukesh Ambani is the Richest in list

The Top 10 Richest in India are
1. Mukesh Ambani $32 billion
2. Lakshmi Mittal $30 billion
3. Anil Ambani $17.5 billion
4. Azim Premji $14.9 billion
5. Shashi & Ravi Ruia $13.6 billion
6. KP Singh $13.5 billion
7. Savitri Jindal $12 billion
8. Sunil Mittal $8.2 billion
9. Kumar Birla $7.8 billion
10. Gautam Adani $6.4 billion

source