Mark Zuckerberg is the Founder and CEO of Facebook. In December 2016, Zuckerberg was ranked 10th on Forbes list of The World's Most Powerful People.
He claims to be Vegetarian since 2011 on his FB Profile (where everyone can write what he wants).
Other sources, (also 2011), claim that he's part-time vegetarian, eating only animals he kills by himself.
Born in White Plains, New York, Zuckerberg attended Harvard University, where he launched the Facebook social networking service from his dormitory room on February 4, 2004, with 4 college roommates.