50. Azim Premji

Azim Premji
Aijaz Rahi/AP

Azim Prenji is currently the second richest person in India. Most often known as the czar of India's information technology industry,

Prenji took over his father's cooking oil manufacturing company Wipro and diversified it into everything from bakery fats to toiletries, hair care, and lighting products. In the 1980s, he expanded to manufacturing computers and subsequently shifted to software.

Net worth: $17 billion

Age: 73

Citizenship: India

Industry: Information Technology

Source of wealth: Inherited; Wipro

49. Donald Bren

Donald Bren
Billionaire developer Donald Bren leaves Los Angeles Superior Court.
Reed Saxon/AP Photo

In 1958, Bren founded the Bren Company and began building homes in California. In the 1960s, he developed the city of Mission Viejo, California and eventually purchased the 146-year-old Irvine Company.

The Los Angeles Times has said that "Orange County looks like Orange County ... because of the influence of" Bren. It is estimated that he is the wealthiest real estate developer in the US.

Net worth: $17.2 billion

Age: 86

Citizenship: USA

Industry: Real Estate

Source of wealth: Self-made, Irvine Company

48. Laurene Powell Jobs

Laurene Powell Jobs
JStone/Shutterstock

While Lauren Powell Jobs is a successful businesswoman in her own right, most of her wealth was inherited from her late husband, Apple founder Steve Jobs.

Powell Jobs runs the Emerson Collective, a social justice advocacy group, co-founded College Track, an organization that helps disadvantaged high school students prepare for college, co-founded Terravera, a natural foods company, and owns stakes in the ownership group of the Washington Wizards and the Washington Capitals.

Net worth: $17.3 billion

Age: 55

Citizenship: United States

Industry: Technology

Source of wealth: Inherited

47. Alexey Mordashov

Alexey Mordashov
Maxim Shevetov/Reuters

Alexey Mordashov is a Russian oligarch who built his fortune as steel company Severstal's majority shareholder. He was the company's CEO for 19 years until 2015. He also has stakes in mining, media, banking, telecom, and, recently, technology.

Net worth: $17.5 billion

Age: 53

Citizenship: Russian Federation

Industry: Diversified

Source of wealth: Self-made

46. Carl Icahn

carl icahn
Carl Icahn
Brendan McDermid/Reuters

Carl Icahn is most famous as a hedge fund manager, investor, and "corporate raider," engaging in hostile takeovers and asset-stripping of in-distress companies. He began his career as a stockbroker in the 1960s.

Icahn is the founder of Icahn Enterprises, a holding company, and has most famously invested in Netflix, Apple, Lyft, and Paypal.

Net worth: $17.8 billion

Age: 82

Citizenship: USA

Industry: Wall Street

Source of wealth: Self-made

45. Rupert Murdoch

Rupert Murdoch
Rupert Murdoch, Chairman of Fox News Channel, September 10, 2017.
Reuters

Rupert Murdoch is an Austrlian media magnate who made his fortune owning newspapers throughout Austrlia, New Zealand, and the United Kingdom.

Eventually, he expanded to the US and formed television and film divisions under the name Fox and Twentieth Century Fox. News Corp, Murdoch's primary company, owns more than 800 companies in over 50 countries.

He is currently the acting CEO of Fox News after CEO Roger Ailes resigned due to accusations of sexual harrassment.

Net worth: $17.8 billion

Age: 87

Citizenship: Australia

Industry: Media

Source of wealth: Inherited; self-made, News Corp

44. Vladimir Lisin

Vladimir Lisin
Maxim Shemetov/Reuters

Vladimir Lisin started his career in the Soviet Union as a mechanic and then engineer in Russia's metallurgy industry. After the dissolution of the Soviet Union, Lisin was part of a group that took control of Russia's steel and aluminum industries.

He is now the sole owner of Novolipetsk Steel, one of the largest steel companies in Russia, and has business interests in shipping, logistics, energy, and utilities.

Net worth: $18 billion

Age: 73

Citizenship: Russian Federation

Industry: Steel

Source of wealth: Self-made

43. Len Blavatnik

len blavatnik
David M. Benett/Getty Images

Soviet-born American Len Blavatnik founded Access Industries in 1986. It began with only Russian investments, but now includes a diverse portfolio. He purchased 20% stake in Tory Burch, now a retail powerhouse, in 2004, becoming the first and largest outside investor in the company.

Net worth: $18.3 billion

Age: 61

Citizenship: United States

Industry: Diversified

Source of wealth: Self-made; Access Industries

42. and 41. Gerard and Alain Wertheimer

alain wertheimer getty stringer
Alain Wertheimer (right), pictured with Queen Elizabeth II (left), and Wertheimer's brother Gerard (centre).
Getty/Stringer

Gerard and Alain Wertheimer are the grandsons of Pierre Wertheimer, the co-founder of the House of Chanel perfume company. Together, they now control Chanel as well as own French vineyards and a horse-racing stable.

Net worth: $18.3 billion, 18.3 billion

Age: 67, 70

Citizenship: France

Industry: Fashion

Source of wealth: Inherited

40. Susanne Klatten

Susan Klatten BMW
AP Photo/Michael Probst

Susanne Klatten inherited a stake in Bayerische Motoren Werke, which owns BMW and Rolls-Royce. 

Net worth: $19.2 billion

Age: 56

Citizenship: Germany

Industry: Industrial

Source of wealth: Inherited; BMW

39. Leonid Mikhelson

leonid mikhelson
Novatek Chairman of the Management Board Leonid Mikhelson takes part in a signing ceremony on the sidelines of the Russian Energy Week international forum in Moscow, Russia October 3, 2018.
REUTERS/Sergei Karpukhin

Leonid Mikhelson started his career in the Soviet Union as an engineer in Siberia, working his way up to general director of Kuibishevtruboprovodstroy, one of the first companies to be privatized after the dissolution of the Soviet Union. The  company was renamed NOVA.

Mikhelson became general director of NOVA's holding company, NOVATEK, and now owns 25% of the company. He also owns a majority stake in SIBUR, a gas company, and is a major patron of Russian and contemporary art.

Net worth: $19.5 billion

Age: 63

Citizenship: Russian Federation

Industry: Steel

Source of wealth: Self-made

 

38. Jorge Paulo Lemann

jorge lemann
Scott Olson/Getty Images

Jorge Lemann worked as a journalist and professional tennis player before jumping into finance in 1971. He co-founded 3G Capital in 2004, and has become known for his affinity for merges and acquisitions.

Net worth: $19.7 billion

Age: 79

Citizenship: Brazil

Industry: Food and beverage

Source of wealth: Self-made; 3G Capital

37. Vladimir Potanin

Vladimir Potanin
Reuters

Vladimir Potanin started his private investment company Interros in the early 1990s, which is invested in mining, metals, energy, finance, and real estate. Interros owns 30% of the Russian nickel company Norilsk Nickel.

Potanin has served as the President of the United Export Import Bank, the first Deputy Prime Minister of the Russian Federation, and currently heads the National Council on Corporate Governance.

Net worth: $19.8 billion

Age: 58

Citizenship: Russian Federation

Industry: Nickel

Source of wealth: Self-made

 

36. Michael Dell

Michael Dell
John Locher/AP

Michael Dell started PC Ltd., the predecessor to Dell Inc., while he was a premed student in 1984. He dropped out of college to build computers full time, and the company went public by the time he was 23.

Net worth: $20.1 billion

Age: 53

Citizenship: United States

Industry: Technology

Source of wealth: Self-made; Dell

35. Leonardo del Vecchio

Leonardo Del Vecchio
Getty Images

Leonardo del Vecchio started Luxottica, the eyewear powerhouse, in 1961 in Milan. It owns Sunglass Hut, Ray-Ban, and Oakley, and manufacturers glasses for a large number of luxury brands.

Net worth: $20.2 billion

Age: 83

Citizenship: Italy

Industry: Consumer goods

Source of wealth: Self-made; Luxottica Group

34. Pallonji Mistry

Jaguar I PACE 12
Hollis Johnson/Business Insider

Pallonji Mistry is the billionaire chairman of Shapoorji Pallonji Group, a construction company started by his father who built many landmarks in Mumbai.

Mistry owns nearly a 20% stake in the Tata Sons, which owns India's largest private conglomerate Tata Group. Tata Group's companies include Jaguar Land Rover, Tata Steel, Tata Motors, as well companies across tea, communications, and hospitality industries. 

Net worth: $20.4 billion

Age: 90

Citizenship: Irish (previously Indian)

Industry: Construction

Source of wealth: Inherited; Tata Group

33. Lee Shau Kee

Lee Shau Kee
Bobby Yip/Reuters

Lee Shau Kee founded Henderson Land Development, which grew into a top real-estate developer in Hong Kong and China, in 1973.

Net worth: $21 billion

Age: 90

Citizenship: Hong Kong

Industry: Real Estate

Source of wealth: Self-made; Henderson Land Development

32. Giovanni Ferrero

Giovanni Ferrero
Giuseppe Cacace/AFP/Getty Images

Giovanni Ferroro controls Ferrero SpA, which makes Ferrero chocolates, Nutella, Kinder chocolates, and Tic Tacs.

Net worth: $22.2 billion

Age: 53

Citizenship: Italy

Industry: Food and beverage

Source of wealth: Inherited; Ferrero Group

31. Dieter Schwarz

A customer takes a caddy outside a Lidl store in Saint Sebastien-sur-Loire near Nantes, June 16 2011. REUTERS/Stephane Mahe
Thomson Reuters

Dieter Schwarz joined his father's business in 1973 and soon opened the company's first discount supermarket. After his father died, he took over as CEO and expanded the business outside of Germany. The company operates Lidl, a grocery-store chain, and Kaufland, which is similar to Walmart.

Net worth: $22.2 billion

Age: 79

Citizenship: Germany

Industry: Retail

Source of wealth: Self-made; Schwarz Gruppe

30. Elon Musk

Elon Musk black tie Tesla SpaceX
Pascal Le Segretain/Getty Images

Elon Musk is the CEO of Tesla, which makes electric cars. He's also the CEO of SpaceX and founded the BOring Companby, OpenAI, and Neuralink.

Net worth: $22.8 billion

Age: 47

Citizenship: United States

Industry: Technology

Source of wealth: Self-made

29. Tadashi Yanai

Tadashi Yanai
Vincent Yu/AP Images

Tadashi Yanai is the the founder and president of Fast Retailing, which owns retailer Uniqlo.

Net worth: $27 billion

Age: 69

Citizenship: Japan

Industry: Retail

Source of wealth: Self-made

28. Li Ka-Shing

li ka-shing
Kin Cheung/AP

Li Ka-shing dropped out of school at 16 to support his family by working in a factory making plastic flowers. He opened his own factory six years later — the predecessor to today's CK Hutchinson Holdings, which has interests in real estate, energy, and telecoms.

Net worth: $27.8 billion

Age: 90

Citizenship: Hong Kong

Industry: Real Estate

Source of wealth: Self-made; CK Hutchinson Holdings

27. Francois Pinault

francois pinault
Charles Platiau/Reuters

Francois Pinault founded luxury goods group Kering, which controls Gucci and Puma, among others.

Net worth: $27.9 billion

Age: 82

Citizenship: France

Industry: Consumer

Source of wealth: Self-made; Kering

26. Phil Knight

Phil Knight
Getty Images / Steve Dykes

Back in the 1960s, Phil Knight started a company that distributed Japanese sneakers in the US under the name Blue Ribbon Sports — which was the predecessor to Nike. He transformed a passion for running into a full blown sneaker and celebrity athletes empire.

Net worth: $28.7 billion

Age: 80

Citizenship: United States

Industry: Consumer

Source of wealth: Self-made; Nike

25. Sheldon Adelson

Sheldon Adelson
REUTERS/Tyrone Siu

Sheldon Adelson and partners developed Computer Dealer's Exhibition (COMDEX), one of the largest trade shows in Las Vegas. He sold the company to Japan's Softbank for $860 million in 1995, and used the money to finance his purchase of the Sands Casino. He demolished that, and built the Venetian Casino Resort and the Sands Expo Convention Center in its place. In 2015, he bought Nevada's largest newspaper.

Net worth: $29.4 billion

Age: 85

Citizenship: United States

Industry: Entertainment/Real Estate

Source of wealth: Self-made; Las Vegas Sands

24. Hui Ka Yan

Hui Ka Yan
Bobby Yip/Reuters

Hui chairs China Evergrande Group, a property developer that has worked on hundreds of projects across nearly 200 cities in China. 

Net worth: $29.8 billion

Age: 59

Citizenship: China

Industry: Real Estate

Source of wealth: Self-made; China Evergrande Group

23. Pony Ma

pony ma
Kin Cheung/AP

Ma Huateng, also known as Pony Ma, founded Tencent Holdings, which has a number of Internet and communication platforms in its portfolio, in 1998 when he was 26. Among others, its platforms include WeChat and QQ. 

Net worth: $31.4 billion

Age: 47

Citizenship: China 

Industry: Technology

Source of wealth: Self-made; Tencent Holdings

22. and 21. John Mars and Jacqueline Mars

john mars
John Stillwell - WPA Pool/Getty Images

Siblings John, Jacqueline, and the late-Forrest Mars inherited a stake in Mars, Inc. after their father died in 1999. The siblings are notoriously private, and don't actively manage the candy maker company. But they do run the Mars Foundation, which gives primarily to educational, environmental, cultural, and health-related causes.

Net worth: $32.9 billion each

Age: 83, 79

Citizenship: United States

Industry: Food and beverage

Source of wealth: Inherited; Mars Inc.

20. Jack Ma

jack ma
Andrew Burton/Getty Images

Jack Ma started e-commerce company Alibaba with just $60,000 in 1999. Fifteen years later, it broke records with a $25 billion initial public offering.

Net worth: $34.8 billion

Age: 54

Citizenship: China 

Industry: Technology

Source of wealth: Self-made; Alibaba

19. Steve Ballmer

Steve Ballmer
AP

Steve Ballmer dropped out of business school at Stanford to become Microsoft's first business manager with a salary of $50,000 and a stake in the company. He eventually became CEO after Bill Gates stepped down and held the post until Satya Nadella replaced him in 2014.

Net worth: $37.3 billion

Age: 62

Citizenship: United States

Industry: Technology

Source of wealth: Self-made; Microsoft

18. Alice Walton

Alice Walton
AP/April L. Brown

Alice Walton is the youngest heir to Helen and Sam Walton's Walmart fortune. She hasn't taken an active role in running the superstore empire, but she co-manages Walton Enterprises, one of the family's two holding companies.

Net worth: $42.6 billion

Age: 69

Citizenship: United States

Industry: Retail

Source of wealth: Inherited; Walmart

17. David Koch

david koch
REUTERS/Carlo Allegri

David Koch runs Koch Industries as executive vice president with his brother, Charles. Koch Industries manufactures, refines, and distributes a wide range of things, including chemicals, energy, minerals, and more. 

Net worth: $42.9 billion

Age: 78

Citizenship: United States

Industry: Industrial

Source of wealth: Self-made; Koch Industries

16. Charles Koch

Charles Koch
Business Insider/Julie Bort

Charles Koch runs Koch Industries as chairman and CEO with his brother, David. In addition to their conglomerate, the two brothers are major political influencers.

Net worth: $42.9 billion

Age: 83

Citizenship: United States

Industry: Industrial

Source of wealth: Self-made; Koch Industries

15. Mukesh Ambani

Mukesh Ambani
Reuters/Amit Dave

After his father died in 2002, Mukesh Ambani took over as chairman of Reliance Industries. He now controls about 40% of the company, which owns the world's largest oil refining complex.

Net worth: $43 billion

Age: 61

Citizenship: India

Industry: Energy

Source of wealth: Inherited/self-made; Reliance Industries

14. Michael Bloomberg

Michael Bloomberg
Michael Bloomberg speaks at the DNC.
Alex Wong/Getty Images

After being fired by Salomon Brothers, Bloomberg founded his eponymous financial-data firm in 1981. He added the news and media subsidiary in 1990, but the majority of Bloomberg LP's revenue continues to come from the sale of terminals. He later served as mayor of New York City for three terms.

Net worth: $43.4 billion (according to Forbes)

Age: 76

Citizenship: United States 

Industry: Financial Services/Media

Source of wealth: Self-made; Bloomberg LP

13. Rob Walton

walmart chairman rob walton
Danny Johnston/AP

Samuel Robson "Rob" Walton is the oldest son of Walmart founders Helen and Sam Walton. He started working at the superstore empire back in 1969 and served as chairman from 1992 to 2015. 

Net worth: $43.8 billion

Age: 74

Citizenship: United States

Industry: Retail

Source of wealth: Inherited; Walmart

12. Jim Walton

jim walton speaking as his brother Rob Walton listens
REUTERS/Rick Wilking

James "Jim" Walton is the youngest son of Walmart founders Helen and Sam Walton. He co-manages Walton Enterprises, the holding company for the Walton family assets.

Net worth: $44 billion

Age: 70

Citizenship: United States 

Industry: Retail

Source of wealth: Inherited; Walmart

11. Francoise Bettencourt Meyers

francoise bettencourt meyers
Francois Mori/AP

Francoise Betterncourt Meyers is now the heiress to the L'Oreal cosmetics fortune after her mother's death in September 2017. She controls 33% of the company, according to Bloomberg.

Net worth: $45.1 billion

Age: 64

Citizenship: France

Industry: Consumer

Source of wealth: Inherited; L'Oreal Group

10. Larry Ellison

Larry Ellison
AP Photo/Eric Risberg

Larry Ellison teamed up with two colleagues from an electronics company in 1977 to start their own programming firm, which then shortly landed a contract to build a relational database-management system for the CIA. The project later grew into what's known today as Oracle Corp., the second largest software maker behind Microsoft. He stepped down as CEO in 2014.

Net worth: $48.9 billion

Age: 74

Citizenship: United States

Industry: Technology

Source of wealth: Self-made; Oracle

9. Sergey Brin

Sergey Brin
Getty Images / Justin Sullivan

Sergey Brin co-founded Google with Larry Page back in 1998. He is now the president of Alphabet, which is the company that owns Google. 

Net worth: $49.1 billion

Age: 45

Citizenship: United States

Industry: Technology

Source of wealth: Self-made; Google

8. Larry Page

Larry Page
Seth Wenig/AP

Larry Page co-founded Google with Sergey Brin in 1998. He is now the CEO of Alphabet, which is the company that owns Google.

Net worth: $50.5 billion

Age: 45

Citizenship: United States

Industry: Technology

Source of wealth: Self-made; Google

7. Mark Zuckerberg

Mark Zuckerberg
AP Photo/Noah Berger

Mark Zuckerberg launched TheFacebook.com when he was a sophomore in college before dropping out to work on the site full-time. 

Net worth: $52.3 billion

Age: 34

Citizenship: United States

Industry: Technology

Source of wealth: Self-made; Facebook

6. Carlos Slim

carlos slim
Rebecca Blackwell/AP

Carlos Slim owns a large number of companies in Mexico through his conglomerate, Grupo Carso. He also controls America Movil, the largest operator of mobile phones in Latin America.

Net worth: $56 billion

Age: 78

Citizenship: Mexico 

Industry: Diversified

Source of wealth: Self-made; Grupo Carso

5. Amancio Ortega

Amancio Ortega
Miguel Vidal/ Reuters

Amancio Ortego controls fashion giant Inditex, which owns Zara, Massimo Dutti, Oysho, and others. At least part of his success can be attributed to Zara's fast-fashion business model. 

Net worth: $57.7 billion

Age: 82

Citizenship: Spain

Industry: Retail

Source of wealth: Self-made; Inditex

4. Bernard Arnault

Bernard Arnault
AP Photo/Michel Euler, Pool

Bernard Arnault is the chair of LVMH Moet Hennessy Louis Vuitton, which houses dozens of luxury brands. Arnault bought Christian Dior when he joined the business, and helped revive the company.

Net worth: $66.1 billion

Age: 69

Citizenship: France

Industry: Consumer

Source of wealth: Self-made/Inheritance; LVMH

3. Warren Buffett

warren buffett
REUTERS/Mike Segar

After getting rejected from Harvard Business School, Warren Buffett went to Columbia instead where he studied under Benjamin Graham, who would become his mentor. He later bought Berkshire Hathaway in 1969 and transformed it into a powerhouse holding company.

Net worth: $78.7 billion

Age: 88

Citizenship: United States

Industry: Diversified

Source of wealth: Self-made; Berkshire Hathaway

2. Bill Gates

Bill Gates
Chip Somodevilla/Getty Images

Bill Gates co-founded Microsoft with his friend Paul Allen, and served as CEO until 2000. He still sits on the company's board, but is no longer active in the day-to-day dealings.

Net worth: $89.5 billion

Age: 63

Citizenship: United States 

Industry: Technology

Source of wealth: Self-made; Microsoft

1. Jeff Bezos

jeff bezos
Mike Segar/Reuters

Jeff Bezos founded Amazon.com in the garage of his Seattle home in 1994. The online marketplace went public three years later and has since grown to sell everything from fashion to tech to food and Amazon's own consumer-electronics products.

On September 13, 2018, Bezos became the richest man in modern history when his net worth hit $150 billion.

Net worth: $125 billion

Age: 54

Citizenship: United States

Industry: Technology

Source of wealth: Self-made; Amazon