There are 1,426 billionaires in the world this year. They are the wealthiest of the wealthy. But only 29 members of this elite list are under 40 years old, with that exciting combination of money and youth.
Those 29 have a total of $119 billion between them. Ten come from the technology sector, including four from social networking giant Facebook. Eleven come from the United States, the rest from countries abroad. Five are newcomers to the billionaire ranks.
Here are the 15 youngest billionaires. For the full list, click over to Forbes: