Jan Timman (born December 14, 1951) is a famous Dutch chessplayer who had his greatest successes in the 1970s and 1980s. He has won the national championship of the Netherlands nine times. He played for the FIDE World Championship in 1993, losing to Anatoly Karpov. Timman continues to play actively, and on the July 2002 FIDE rating list, he was ranked 67th in the world. With the October 2002 list, however, he fell out of the top 100.