01) Bill gates-

William Henry "Bill" Gates III(born October 28, 1955) is an American business magnate, philanthropist, investor, computer programmer, and inventor.Gates is the former chief executive and chairman of Microsoft, the world’s largest personal-computer softwarecompany, which he co-founded with Paul Allen.

2) Carlos Slim Helu-

Carlos Slim Helú(Spanish pronunciation: [ˈkaɾlos esˈlin eˈlu]; born January 28, 1940) is a Mexican business magnate, investor, and philanthropist.

3) Warren Buffett-

Warren Edward Buffett( / ˈ b ʌ f ɨ t /; born August 30, 1930) is an American business magnate, investor, and philanthropist. He is widely considered the most successful investor of the 20th century. Buffett is the chairman, CEO and largest shareholder of Berkshire Hathaway.

4) Amancio Ortega-

Amancio Ortega Gaona(Spanish pronunciation: [aˈmanθio oɾˈteɣa ɡaˈona]; born 28 March 1936) is a Spanish fashion executive and founding chairman of the Inditexfashion group, best known for its chain of Zaraclothing and accessories retail shops.

5) Ingvar Kamprad-

Ingvar Feodor Kamprad born 30 March 1926) is a Swedish business magnate. He is the founder of IKEA, a Swedish retailcompany specialising in furniture.

6) Charles Koch-

Charles de Ganahl Koch( / ˈ k oʊ k /; born November 1, 1935) is an American businessman and philanthropist. He is co-owner, chairman of the board, and chief executive officerof Koch Industries. His brother David H. Kochalso owns 42% of Koch Industries and serves as Executive Vice President. The brothers inherited the business from their father, Fred C. Koch, and have since expanded the business to 2,600 times its inherited size.

7) David Koch-

David Hamilton Koch( / ˈ k oʊ k /; born May 3, 1940) is an American businessman, philanthropist, political activist, and chemical engineer. He is a co-owner (with older brother Charles) and an executive vice president of Koch Industries, a conglomerate that is the second-largest privately held company in the United States.

8) Larry Ellison-

Lawrence Joseph "Larry" Ellison(born August 17, 1944) is an American businessman, best known as the co-founder and chief executive officer of Oracle Corporation, an enterprise softwarecompany.

9) Christy Walton-

Christy Ruth Walton(born February 8, 1949) is the widow of John T. Walton, one of the sons of Sam Walton, the founder of Wal-Mart. After John's death in June 2005, she inherited his fortune of US$18.2billion.

10) Jim Walton-

Jim Walton(sometimesJames Carr,born June 7, 1948) is the youngest son of Sam Walton, the founder of world's largest retailer Wal-Mart.