John Leonard Watson (born 1951) is an American chess player and author who was awarded the title of International Master in 1979.
In 2022, he was inducted into the U.S. Chess Hall of Fame along with GMJames Tarjan and the late Daniel Willard Fiske. He is also a recipient of the US Chess Federation's Frank J. Marshall Award, and a 2015 inductee into the Colorado Chess Hall of Fame.
Watson is a renowned chess theorist and author, having published more than thirty books on many aspects of chess. His 1999 book Secrets of Modern Chess Strategy won the British Chess Federation's Book of the Year award as well as the United States Chess Federation Book of the Year. The successor volume Chess Strategy in Action was the Chesscafe Book of the Year. These two books explore and theorize how radically chess has changed since the early 20th century, and how old and supposedly 'time-tested' rules for the conduct of play have been replaced by broader and revolutionary practice over the board. These books have been translated into several languages. In a lighter vein, Watson wrote the Chessmancomic book series, illustrated by Chris Hendrickson and Svein Myreng. Chessman comics are now out-of-print collectors' items. Watson has a regular book review columns at The Week in Chess, the publication of the London Chess Centre (available online), and in Chess Life. His weekly Internet radio show 'Chess Talk with John Watson' was hosted by on Chess.FM, the radio arm of the Internet Chess Club (ICC).