1. Bill Gates
Net Worth: $81B
Source of wealth: Microsoft
2. Jeff Bezos
Net Worth: $67B
Source of wealth: Amazon.com
Net Worth: $65.5B
Source of wealth: Berkshire Hathaway
Net Worth: $55.5B
Source of wealth: Facebook
Net Worth: $49.3B
Source of wealth: Oracle
Net Worth: $45B
Source of wealth: Bloomberg LP
7. Charles Koch
Net Worth: $42B
Source of wealth: diversified
7. David Koch
Net Worth: $42B
Source of wealth: diversified 9. Larry Page
Net Worth: $38.5B
Source of wealth: Google
10. Sergey Brin
Net Worth: $37.5B
Source of wealth: Google
11. Jim Walton
Net Worth: $35.6B
Source of wealth: Wal-Mart
12. S. Robson Walton
Net Worth: $35.5B
Source of wealth: Wal-Mart
13. Alice Walton
Net Worth: $35.4B
Source of wealth: Wal-Mart
14. Sheldon Adelson
Net Worth: $31.8B
Source of wealth: casinos
15. Steve Ballmer
Net Worth: $27.5B
Source of wealth: Microsoft
16. Jacqueline Mars
Net Worth: $27B
Source of wealth: candy Read More: Billionaires’ Secrets to Building Wealth
16. John Mars
Net Worth: $27B
Source of wealth: candy
18. Phil Knight
Net Worth: $25.5B
Source of wealth: Nike
19. George Soros
Net Worth: $24.9B
Source of wealth: hedge funds
20. Michael Dell
Net Worth: $20B
Source of wealth: Dell computers
21. Paul Allen
Net Worth: $18.9B
Source of wealth: Microsoft, investments
22. Len Blavatnik
Net Worth: $18.2B
Source of wealth: diversified
23. Laurene Powell Jobs
Net Worth: $17.7B
Source of wealth: Apple, Disney
24. James Simons
Net Worth: $16.5B
Source of wealth: hedge funds 25. Ray Dalio
Net Worth: $15.9B
Source of wealth: hedge funds
26. Carl Icahn
Net Worth: $15.7B
Source of wealth: investments
27. Donald Bren
Net Worth: $15.2B
Source of wealth: real estate
28. Charles Ergen
Net Worth: $14.7B
Source of wealth: satellite TV
29. Abigail Johnson
Net Worth: $13.2B
Source of wealth: money management
30. Harold Hamm
Net Worth: $13.1B
Source of wealth: oil & gas
31. Steve Cohen
Net Worth: $13B
Source of wealth: hedge funds
32. Thomas Peterffy
Net Worth: $12.6B
Source of wealth: discount brokerage 33. Ronald Perelman
Net Worth: $12.2B
Source of wealth: leveraged buyouts
34. Elon Musk
Net Worth: $11.6B
Source of wealth: Tesla Motors
35. David Tepper
Net Worth: $11.4B
Source of wealth: hedge funds
36. Eric Schmidt
Net Worth: $11.3B
Source of wealth: Google
37. Lukas Walton
Net Worth: $11.2B
Source of wealth: Wal-Mart
38. Rupert Murdoch
Net Worth: $11.1B
Source of wealth: newspapers, TV network
39. Philip Anschutz
Net Worth: $10.8B
Source of wealth: investments
39. Jim Kennedy
Net Worth: $10.8B
Source of wealth: media 39. Blair Parry-Okeden
Net Worth: $10.8B
Source of wealth: media
42. Donald Newhouse
Net Worth: $10.5B
Source of wealth: media
42. Samuel Newhouse
Net Worth: $10.5B
Source of wealth: media
44. Dustin Moskovitz
Net Worth: $10.4B
Source of wealth: Facebook
45. Stephen Schwarzman
Net Worth: $10.3B
Source of wealth: investments
46. John Menard
Net Worth: $9.4B
Source of wealth: home improvement stores
47. Patrick Soon-Shiong
Net Worth: $9.2B
Source of wealth: pharmaceuticals
48. Leonard Lauder
Net Worth: $9B
Source of wealth: Estee Lauder 49. Andrew Beal
Net Worth: $8.9B
Source of wealth: banks, real estate
50. Jan Koum
Net Worth: $8.8B
Source of wealth: WhatsApp
51. James Goodnight
Net Worth: $8.7B
Source of wealth: software
52. Herbert Kohler
Net Worth: $8.6B
Source of wealth: plumbing fixtures
52. John Paulson
Net Worth: $8.6B
Source of wealth: hedge funds
54. Pierre Omidyar
Net Worth: $8.1B
Source of wealth: eBay
55. Thomas Frist
Net Worth: $7.9B
Source of wealth: health care
56. Gordon Moore
Net Worth: $7.6B
Source of wealth: Intel 57. Ken Griffin
Net Worth: $7.5B
Source of wealth: hedge funds
58. Eli Broad
Net Worth: $7.4B
Source of wealth: investments
58. Stanley Kroenke
Net Worth: $7.4B
Source of wealth: sports, real estate
58. Stephen Ross
Net Worth: $7.4B
Source of wealth: real estate
61. Micky Arison
Net Worth: $7.2B
Source of wealth: Carnival Cruises
61. James Chambers
Net Worth: $7.2B
Source of wealth: media
61. Carl Cook
Net Worth: $7.2B
Source of wealth: medical devices
61. George Kaiser
Net Worth: $7.2B
Source of wealth: oil & gas, banking 61. John Malone
Net Worth: $7.2B
Source of wealth: cable television
61. Katharine Rayner
Net Worth: $7.2B
Source of wealth: media
61. Margaretta Taylor
Net Worth: $7.2B
Source of wealth: media
68. Edward Johnson
Net Worth: $7.1B
Source of wealth: money management
69. Richard Kinder
Net Worth: $7B
Source of wealth: pipelines
70. Shahid Khan
Net Worth: $6.9B
Source of wealth: auto parts
70. Hank & Doug Meijer
Net Worth: $6.9B
Source of wealth: supermarkets
70. Les Wexner
Net Worth: $6.9B
Source of wealth: retail 73. David Duffield
Net Worth: $6.7B
Source of wealth: business software
73. David Geffen
Net Worth: $6.7B
Source of wealth: movies, record labels
73. Richard LeFrak
Net Worth: $6.7B
Source of wealth: real estate
76. Charles Schwab
Net Worth: $6.6B
Source of wealth: discount brokerage
77. Pauline MacMillan Keinath
Net Worth: $6.4B
Source of wealth: Cargill
78. Bruce Halle
Net Worth: $6.3B
Source of wealth: tires
78. Travis Kalanick
Net Worth: $6.3B
Source of wealth: Uber Technologies
Net Worth: $6.2B
Source of wealth: Wal-Mart 81. David Green
Net Worth: $6.1B
Source of wealth: retail
82. Robert Rowling
Net Worth: $6B
Source of wealth: investments
83. Ralph Lauren
Net Worth: $5.9B
Source of wealth: Ralph Lauren
83. John A. Sobrato
Net Worth: $5.9B
Source of wealth: real estate
83. Dennis Washington
Net Worth: $5.9B
Source of wealth: construction, mining
86. Michael & Marian Ilitch
Net Worth: $5.8B
Source of wealth: pizza
87. Christy Walton
Net Worth: $5.6B
Source of wealth: Wal-Mart
88. Brian Acton
Net Worth: $5.4B
Source of wealth: WhatsApp 88. Richard DeVos
Net Worth: $5.4B
Source of wealth: Amway
90. Bruce Kovner
Net Worth: $5.3B
Source of wealth: hedge funds
90. Ted Lerner
Net Worth: $5.3B
Source of wealth: real estate
90. David Sun
Net Worth: $5.3B
Source of wealth: computer hardware
90. John Tu
Net Worth: $5.3B
Source of wealth: computer hardware
94. Dannine Avara
Net Worth: $5.2B
Source of wealth: pipelines
94. Jim Davis
Net Worth: $5.2B
Source of wealth: New Balance
94. Scott Duncan
Net Worth: $5.2B
Source of wealth: pipelines 94. Milane Frantz
Net Worth: $5.2B
Source of wealth: pipelines
94. Jerry Jones
Net Worth: $5.2B
Source of wealth: Dallas Cowboys
94. Whitney MacMillan
Net Worth: $5.2B
Source of wealth: Cargill
94. Trevor Rees-Jones
Net Worth: $5.2B
Source of wealth: oil & gas
94. Randa Williams
Net Worth: $5.2B
Source of wealth: pipelines