2019: $13.6 billion
Mittal is famous for his jet setting lifestyle. He owns three mansions worth $350 million in London, reported Bloomberg citing purchase records from the U.K. Land Registry.
He also spent a whopping £34m to host his daughter's wedding in 2004.
Moreover, he owns a private jet, a chauffeur-driven £2,00,000 Daimler Maybach, and a couple of yachts.