Walter Jon Williams (born October 15, 1953) is an American game designer and science fiction writer.
As Jon Williams, he designed the game Heart of Oak (1982) and Privateers and Gentlemen (1983) for Fantasy Games Unlimited. (Wikipedia). Earlier versions of these books, credited to Walter Williams, were published under the titles Tradition of Victory I and Tradition of Victory II (1978).
He also worked on Scourcebook for Cyberpunk 2013.