30. Ma Huateng
Net worth: $22.5 billion
Age: 45
Country: China
Industry: Technology
Source of wealth: Self-made; Tencent Holdings
Software engineer Ma Huateng (aka Pony Ma) founded China's largest internet portal, Tencent Holdings, in 1998. He was 26. Ma's company has a number of successful and widely used platforms in its portfolio, including QQ, its instant-messaging service, which is one of the world's 10 largest websites; a mobile-texting service (WeChat) with over 800 million users; a mobile-commerce product (WeChat Wallet); and an online-gaming community (Tencent Games), the largest in China.
Ma's wealth has increased by $4.7 billion in the past year.