No 1: Bill Gates Net Worth: $76 bn Company: Microsoft Source: (AP)
No 2: Amancia Ortega Net worth:$70 bn Company: Zara Source: (Reuters)
No 3: Warren Buffett Net worth: $59.5 bn Company: Berkshire Hathaway Source: (Reuters)
No 4: Carlos Slim Helu Net worth: $50.2 bn Company: Telecom Source: (Reuters)
No 5: Mark Zuckerberg Net worth: $50 bn Company: Facebook Source: (Reuters)
No 6: Jeff Bezos Net worth: $48.9 bn Company: Amazon.com Source: (Reuters)
No 7: Larry Ellison Net worth: $44 bn Company: Oracle Source: (Reuters)
No 8 : Charles Koch Net worth: $40.8 bn Company: Diversified Source: (Reuters)
No 9: David Koch Net worth: $40.8 bn Company: Diversified Source: (Reuters)
No 10: Larry Page Net worth: $39 bn Company: Google Source: (AP)
No 11: Sergey Brin Net worth: $38.2 bn Company: Google Source: (AP)
No 12: Liliane Bettencourt Net worth: $36.3 bn Company: L'Oreal Source: ( Reuters)
No 13: Michael Bloomberg Net worth: $36.2 bn Company: Bloomberg LP Source: (AP)
No 14: Jim Walton Net worth: $34.6 bn Company: Wal-Mart Source: (Wal-Mart Flickr)
No 15: Bernard Arnault Net worth: $33.7 bn Company: LVMH Source: (Reuters)
No 16: Alice Walton Net worth: $33 bn Company: Wal-Mart Source: (Reuters)
No 17: S Robson Walton Net worth: $32.6 bn Company: Wal-Mart Source: (Wal-Mart Flickr)
No 18: Christy Walton Net worth: $31.5 bn Company: Wal-Mart Source: (AP)
No 19: Li Ka Shing Net worth: $27.8 bn Company: Diversified Source: (Reuters)
No 20: Beate Heister & Karl Albrecht Net worth: $26.7 bn Company: Supermarkets Source: (Reuters)