Mardy Fish (born December 9, 1981 in Edina, Minnesota) is an American professional tennis player. He is one of several young American tennis players who rose to prominence at the beginning of the 21st century. He is currently ranked #23 in the world and #17 in the race. Fish has won two tournaments on the main ATP Tour, and has reached the final of two elite Masters Series events; Cincinnati in 2003, and Indian Wells in 2008. His best result at a Grand Slam tournament came at the 2007 Australian Open, where he reached the quarter-finals before losing to compatriot Andy Roddick and the 2008 US Open where he also reached the quarters before losing to current World No. 1 Rafael Nadal. His biggest win in singles came when he defeated the then World No. 1 Roger Federer at the Pacific Life Open in 2008.

Fish is the son of a tennis teaching professional and a housewife, Tom and Sally Fish. He was born in Edina MN. Mardy earned his first taste of fame in 1984 when, at the age of two, a Minneapolis, Minnesota TV station ran a profile of the young athlete hitting tennis balls from the baseline over the net. In 1985, Fish`s family moved to Vero Beach, Florida, where Mardy attended Vero Beach High School for three years. Fish then moved to Boca Prep in Boca Raton, Florida for his senior year of high school. During that year, he lived with the family of Andy Roddick, where the two young promising players raced their cars to school. Fish returned to Vero Beach in 2000, where he spent part of the year training at Saddlebrook Academy in Tampa, Florida.

In November 2007, Mardy became engaged to Stacey Gardner, a California attorney and a "Briefcase Model" on NBC`s Deal or No Deal. The two were married in September 2008. Fish`s friend and fellow tennis player James Blake served as groomsman.