Age: 39 Net worth: $2.5 billion Nick Woodman is the founder and CEO of sports-camera company GoPro. With an estimated compensation of $284.5 million, he was the highest-paid U.S. CEO of 2014.Age: 39 Net worth: $6.8 billion Jan Koum is the cofounder and CEO of WhatsApp, which Facebook bought for $19 billion in February 2014.Age: 38 Net worth: $1.14 billion Yoshikazu Tanaka is the founder and CEO of Gree, a Japanese gaming and social networking company.Age: 38 Net worth: $2.5 billion Jack Dorsey is a cofounder of Twitter and still owns a 4% stake in the company. He went on to found Square, a mobile payments company. Age: 38 Net worth: $5.3 billion Travis Kalanick is the cofounder and CEO of Uber. The ridesharing app has been valued at as much as $41 billion, and he's been a billionaire on paper since June 2014.Age: 37 Net worth: $1.64 billion Naruatsu Baba is the founder and CEO of Japanese smartphone game maker Colopl.Age: 37 Net worth: $1.8 billion Robert Pera founded wireless product maker Ubiquiti Networks. The company's 2011 IPO made him a billionaire. Age: 36 Net worth: $5.3 billion Garret Camp is the cofounder and chairman of Uber. Before that, he cofounded StumbleUpon. Age: 35 Net worth: $1.1 billion Along with college friend Mike Cannon-Brookes, Scott Farquhar is the cofounder of Australian software company Atlassian. The company is worth $3.3 billion as of April 2014, and Farquhar and Cannon-Brookes each own about a third.Age: 35 Net worth: $1.1 billion Mike Cannon-Brookes cofounded Atlassian with college friend Scott Farquhar. According to Forbes, he owns a Tesla.Age: 35 Net worth: $2.5 billion Sean Parker is the cofounder of Napster and founding president of Facebook.Age: 33 Net worth: $4.9 billion Eduardo Saverin is a cofounder of Facebook. He has since renounced his U.S. citizenship, moved to Singapore, and invested in startups like Hampton Creek and Silvercar.Age: 32 Net worth: $1.2 billion Drew Houston is the cofounder and CEO of Dropbox. The company is now worth more than $10 billion.Age: 31 Net worth: $1.4 billion Ryan Graves was Uber's first hire. He got the job by tweeting at Travis Kalanick: heres a tip. email me :).Age: 30 Net worth: $8.1 billion Dustin Moskovitz was Facebook's third employee. He went on to found software firm Asana and, with his wife Cari, Good Ventures.Age: 30 Net worth: $34.4 billion Facebook cofounder and CEO Mark Zuckerberg has been a paper billionaire since he was 23. It became official in 2012, when he sold 30.2 million Facebook shares for a $1.13 billion profit.Age: 26 Net worth: $1.5 billion Like his cofounder, Snapchat CTO Bobby Murphy owns at least a 15% stake in the disappearing photo messaging startup. Age: 24 Net worth: $1.5 billion Snapchat cofounder and CEO Evan Spiegel is the youngest billionaire in the world. I am a young, white, educated male, he once said at a conference. I got really, really lucky. And life isn't fair.The fabulous life of Snapchat CEO Evan Spiegel, the youngest billionaire in the world »