Yat Siu, born in Vienna, Austria in 1973, is a Hong Kong-based entrepreneur and angel investor. He studied cello, flute, and piano at the Music and Arts University of the City of Vienna. His early career included a role at Atari Germany and later as a director at Lexicor and AT&T Solutions System Integration practice. In 1996, he moved to Hong Kong and founded Cybercity, later renamed Freenation, which was Asia's first free web page and email provider.