James (Jim) Rempe (born November 4, 1947, in Scranton, Pennsylvania, US) is an American professional pocket billiards (pool) player, and was inducted into the Billiard Congress of America's Hall of Fame in 2002.
Rempe began playing pool at the age of 6. he turned pro at the age of 22, winning over 100 major championships, and taking 11 world titles, including the World Straight Pool Championship, WPA World Nine-ball Championship, the World One-pocket Championship, All-Around World Championship and, later, the Mizerak Senior Tour.
He accumulated 23 tournament wins between 1972 and 1978, more than any other pool player in the world, thus acquiring the nickname "King James".
In September 1975, Rempe went on a 23-stop tour in Australia where he defeated Australian Snooker Champion Eddie Charlton in nine-ball, rotation, and straight pool.
In December 2005, Rempe participated in the International Pool Tour King of the Hill Shootout, an invitational event consisting of thirteen BCA Hall of Famers and thirty other accomplished players, in Orlando, Florida. competed in this historic tournament which was televised on the Versus network.
Like his Australian rival Eddie Charlton, Rempe has branched out into product development and marketing, with his Jim Rempe Training Ball (manufactured by Saluc), a cue ball marked with rings and targets on the surface of the ball so that the practicing player can better judge the effects of very particular amounts of sidespin, topspin, backspin and other forms of cue ball control, and learn better control of cue stroke. Various competing products, such several other Saluc models and Elephant Practice Balls, use a similar aiming system. The Rempe ball is included in higher-end Saluc Aramith-brand ball and ball-and-accessory sets.