Mark Zuckerberg

Billionaire Mark Zuckerberg is known for founding Facebook, creating the site out of his college dorm room at Harvard University. Along with creating the social media site, Zuckerberg can also speak Mandarin Chinese.

Married to Priscilla Chan - the daughter of Chinese immigrants - Zuckerberg began studying the language back in 2010 and is now fluent. A video of him speaking the language went viral in 2014.