The world's 20 youngest billionaires are evidence that enormous fortunes can be created in far less than a lifetime.All of them are under 40.
The youngest, Dustin Moskovitz, is just eight days younger than his Facebook cofounder Mark Zuckerberg (both are 26).
20 Dustin Moskovitz
Age: 26 , United States
The world's youngest billionaire, Dustin Moskovitz, was Mark Zuckerberg's Harvard roommate and Facebook's third employee. He is just eight days younger than his friend.
19 Mark Zuckerberg
Age: 26 ,United States
Zuckerberg's Facebook was a key spark in the spread and organization of the recent revolts in Tunisia, Egypt, Yemen and Libya.
18 Albert von Thurn und Taxis
Age: 27 , Germany
First appeared in Forbes' ranks at age 8, but officially inherited fortune in June 2001, on his 18th birthday.
17 Scott Duncan
Age: 28 , United States
Son of the late Dan Duncan assumed partial control of his $12.4 billion pipeline empire after father's death in March 2010 at age 77. Houston's richest man at the time of his death, Dan Duncan grew up poor, starting energy company Enterprise Products with two trucks in 1968. Today it owns more than 49,000 miles of pipelines.
16 Eduardo Saverin
Age: 29 ,United States
Together with former best bud Mark Zuckerberg, started Facebook at Harvard and received a 30% stake in the company. Relationship soured when Facebook sued Saverin for allegedly interfering with business and insisting on keeping 30% stake; Saverin countersued. The parties settled, with Saverin apparently getting a 5% stake and a cofounder bio on Facebook's site. Source tells Forbes Saverin has been selling shares and now holds 2%. In January made rare news when he led an $8 million round of financing of Qwiki, a hot Silicon Valley startup.
15 Yang Huiyan
Age: 29 , China
Main shareholder in Country Garden Holdings of Guangzhou, one of China's largest property developers. The company's chairman is Yang's father, Yeung Kwok Keung, who transferred his holding to her before the company went public in Hong Kong in 2007.
14 Fahd Hariri
Age: 30 , Lebanon
Youngest son of slain Lebanese Prime Minister Rafik Hariri inherited stake in his father's construction, telecom and real estate conglomerate Saudi Oger after his death in 2005.
13 Sean Parker
Age: 30 ,United States
Silicon Valley strategist and former Facebook president debuts as a billionaire based on the surging value the social networking site. His reported stake: just under 3%. At 19 cofounded Napster, music sharing service that brought free music to the masses and helped trigger the record industry's precipitous decline.
12 Ayman Hariri
Age: 32 ,Lebanon
Son of slain Lebanese Prime Minister Rafik Hariri, who left behind a fortune now shared by his five children. Ayman sits on the board of Saudi Oger, a construction, telecom and real estate conglomerate.
11 Yoshikazu Tanaka
Age: 34 ,Japan
Founder of Gree, Japan's largest social networking site, may be facing off with Facebook's Mark Zuckerberg soon; setting up shop in California. On global expansion kick--working with Tencent, largest Internet service portal in China.
10 Yusaku Maezawa
Age: 35 ,Japan
Founded online retailer of apparel and accessories; widely popular Zozotown caters to young fashionistas. Website is structured like actual mall where stores are set up; sells on consignment.
9 Oleg Bakhmatyuk
Age: 36 ,Ukraine
Founder and head of egg producer Avangardco joins the billionaires list after floating a 20% stake in the company in June 2010. Stock price up 35% since going public. Sister Nataliya is CEO. Bakhmatyuk previously worked in state oil and gas company Naftogaz Ukraine.
8 Andrey Verevskiy
Age: 36 , Ukraine
Took agribusiness conglomerate Kernel Holding public on Warsaw stock exchange in 2007.
7 John Arnold
Age: 37 , United States
The head of hedge fund Centaurus Advisors suffered his first losing year in 2010, rumored to be down 8%.
6 Kostyantin Zhevago
Age: 37 , Ukraine
Ukraine's youngest billionaire benefiting from rising iron ore prices; stock in his iron ore producer Ferrexpo doubled over the past year.
5 Xian Yang
Age: 37 , China
Chairman of Hidili Industry International Development, a coke and raw coal mining company.
4 Ana Lucia de Mattos Barretto Villela
Age: 37 , Brazil
Low-profile member of one of Brazil's oldest and most distinguished banking families.
3 Fang Wei
Age: 37 , China
Beijing-based investor targets underperforming state-owned listed companies for restructuring.
2 Serra Sabanci
Age: 37 ,Turkey
Board member and shareholder of large conglomerate Sabanci Holding and member of the board of directors of the Sabanci Foundation.
1 Sergey Brin
Age: 37 , United States
Google cofounder Sergey Brin saw company stock rise 18% over the past year as Google maintained nearly two-thirds of the market for online search.
Source: Forbes Billionaires List 2011