The Mosconi Cup is an annual nine-ball pool tournament contested since 1994 between teams representing Europe and the United States. Named after American pool player Willie Mosconi, the event is comparable to the Ryder Cup in golf and the Weber Cup in bowling.

Nine-ball is a discipline of the cue sport pool. The game's origins are traceable to the 1920s in the United States. It is played on a rectangular billiard table with pockets at each of the four corners and in the middle of each long side. Using a cue stick, players must strike the white cue ball to pocket nine colored billiard balls, hitting them in ascending numerical order. An individual game is won by the player pocketing the 9-ball. Matches are usually played as a race to a set number of racks, with the player who reaches the set number winning the match.