Michael J. Sullivan (born September 17, 1961) is a New York Times, USA Today, and Washington Post bestselling American writer of epic fantasy and science fiction, best known for his debut series The Riyria Revelations, which has been translated into fourteen languages. In 2012 io9 named him one of the "Most Successful Self-Published Sci-Fi and Fantasy Authors". His books have been translated into French, German, Spanish, Czech, Dutch, Polish, Hungarian, Japanese, Georgian, Bulgarian, Russian, Portuguese, Italian and Turkish.