This 26th year of tracking global wealth was one to remember, with an all-time high . The 2011 Forbes Billionaires List breaks two records: total number of listees (1,226) and combined wealth ($4.6 trillion). This horde surpasses the gross domestic product of Germany, one of only six nations to have fewer billionaires this year.
Here’s the 2012 top-10 Billionaires in India:
No.1 Mukesh Ambani
Net Worth: 
$22.3 Billion – As of March 2012
Source: Petrochemicals, oil & gas, inherited and growing
Age: 54 , Citizenship: India
No.2 Lakshmi Mittal
Net Worth:
$20.7 Billion - As of March 2012
Source: Steel, inherited and growing
Age:61 , Citizenship: India
No.3 Azim Premji
Net Worth: $15.9 Billion As of March 2012
Source: Software, inherited and growing
Age: 66 , Citizenship: India
No.4 Savitri Jindal & family
Net Worth: $10.9 Billion – As of March 2012
Source: Steel, inherited
Age: 62 , Citizenship: India
No.5 Sunil Mittal & family
Net Worth: 
$8.1 Billion As of March 2012
Source: Telecom, self-made
Age: 54 , Citizenship: India
No.6 Kumar Birla
Net Worth:$8 Billion – As of March 2012
Source: Commodities, inherited and growing
Age: 44 , Citizenship: India
No.7 Anil Ambani
Net Worth: $7.8 Billion – As of March 2012
Source: Diversified, inherited and growing
Age: 52 , Citizenship: India
No.8 Dilip Shanghvi
Net Worth: $7.4 Billion – As of March 2012
Source: Pharmaceuticals, self-made
Age: 56, Citizenship: India
No.9 Shashi & Ravi Ruia
Net Worth:$7 Billion – As of March 2012
Source: Diversified, inherited and growing
Age: 68, Citizenship: India
No.10 Kushal Pal Singh
Net Worth: $6.4 Billion – As of March 2012
Source: Real estate
Age: 80 , Citizenship: India
