James Scott "Jimmy" Connors (born September 2, 1952, in East St. Louis, Illinois, also known as "Jimbo") is an American former World No. 1 tennis player. Connors is considered to be one of the greatest tennis players of all time. He held the top ranking for 160 consecutive weeks from July 29, 1974, through August 29, 1977, and an additional eight times during his career (a total of 268 weeks). He won eight Grand Slam singles titles and two Grand Slam doubles titles with Ilie Năstase and was the mixed doubles runner-up with Chris Evert at the 1974 US Open. He is a former coach of Andy Roddick, the winner of the 2003 US Open.

Although Connors never won the French Open, his victory at the 1976 US Open came during the brief period (1975-77) when that tournament was held on clay courts. Connors is, therefore, one of only five men (Mats Wilander, Andre Agassi, Roger Federer and Rafael Nadal are the others) to have won a Grand Slam singles title on grass courts, hard courts, and clay courts.

Connors also won the U.S. Open singles championship itself on grass courts, hard courts, and clay courts, the only man to accomplish that trio of wins.