1.L N Mittal
started his career from mid of 1970. Lakshmi Niwas Mittal is the richest Indian in the world, with an estimated wealth of $25 billion. He is known as steel giant in the world.

2. Ratan Tata.
Ratan Naval Tata, a bachelor, is the chairman of the Tata Group, India's most respected conglomerate. He was born into a Parsi family in Mumbai (then called Bombay).

3. . Mukesh D Ambani.
Mukesh Ambani, the chairman and managing director of India's largest private sector enterprise -- Reliance Industries Limited -- was born on April 19, 1957. His father, the legendary Dhirubhai Ambani, was then a small businessman who later on rose to become one of the legends of Indian industry.
4. . Nandan Nilekani.
Nandan Nilekani is the CEO and managing director of Infosys Technologies.
5. . Azim H Premji

Azim Hashim Premji, the chairman of Wipro Technologies, is one of the richest Indians. He is an icon among Indian businessmen, especially in the software industry. Born on July 24, 1945, Premji was studying Electrical Engineering at Stanford University, USA when due to the sudden demise of his father; he was called upon to handle the family business at the age of 21.
6. . Anil D Ambani
The fourth richest Indian today, with a net worth of about $13.5 billion, Anil Ambani is chairman of Reliance Communications, Reliance Capital, Reliance Energy and Reliance Natural Resources Limited.
7. Sunil Mittal
Sunil B Mittal is chairman and managing director of Bharti group. Bharti is India's largest GSM-based mobile phone service.
8. K V Kamath
Kundapur Vaman Kamath is the managing director and CEO of ICICI Bank, the largest private bank in India. Kamath, born on December 2, 1947.
9. . Kumar Mangalam Birla
Kumar Mangalam Birla, born on June 14, 1967, is among the richest persons in India and the eighth youngest billionaire outside India. He is chairman of the Aditya Birla Group, one of India's largest business groups.
10. . Rahul Bajaj
Rahul Bajaj is the chairman of the Bajaj Group, which ranks among the top 10 business houses in India. He is one of India's most distinguished business leaders and internationally respected for his business acumen and entrepreneurial spirit.