Deena Brush Mapple (born Deena Brush November 3, 1962) is a retired American competitive water skier. She is considered by many[who?] to be the greatest female water skier of her generation. Her Grand Slam Victory in 1987 - overall wins in the World Championships, U.S. Nationals, U.S. Masters and the Pro Tour - made her one of two athletes to ever accomplish the feat. She remains the only American to earn membership to the United States Waterskiing Team seven consecutive times.
In 1987, Brush married Andy Mapple, who would eventually be a six-time world water skiing champion, and a 14 time Masters Slalom Champion himself. After the marriage, she variously became referred to as Deanna Brush Mapple, Deanna Brush-Mapple and Deanna Mapple.