Bill Gates, Larry Ellison, and Jeff Bezos are among some of the wealthiest tech tycoons here in the U.S.  But there are plenty of extremely wealthy tech executives across the globe who are making major contributions to their country's tech scenes. With the help of Forbes' Billionaires List, we've rounded up the wealthiest tech tycoons in 14 countries across the globe. They've each played a major role in technological advances around the world, and they've raked in billions doing it.Brazil: Eduardo Saverin Net worth: $5.1 billion Background: Eduardo Saverin became a billionaire after cofounding Facebook with Mark Zuckerberg. He was born in Brazil but attended school in the U.S. before renouncing his American citizenship and moving to Singapore in 2012. He still owns about 53 million shares of Facebook stock and spends his time as an angel investor. Canada: Garrett Camp Net worth: $5.3 billion Background: Calgary native Garrett Camp cofounded StumbleUpon in 2002, when he was still a graduate student. After selling the company to eBay for $75 million in 2007, he went on to start Uber with Travis Kalanick. Uber was most recently valued at more than $50 billion.  China: Jack Ma Net worth: $25.3 billion Background: Jack Ma is the founder and executive chairman of Alibaba, the Chinese ecommerce company whose $25 billion IPO set a record for the New York Stock Exchange in 2014. He grew up poor in communist China, failed his college entrance exam twice, and was rejected from dozens of jobs, including one at KFC. See the rest of the story at Business Insider