4. L N Mittal
Lakshmi N Mittal is a London-based Indian-origin entrepreneur who heads ArcelorMittal - one of the world's largest steelmaking companies. He comes fourth in the latest IIF Wealth Hurun India rich list. He is the fourth richest Indian with a total wealth of Rs 1,07,300 crore. In June 2017, ArcelorMittal along with Italian steel firm Marcegaglia, acquired Italy's loss-making steel group Ilva for $2.1 billion.