The 2011 Mosconi Cup, the 18th edition of the annual nine-ball pool competition between teams representing Europe and the United States, took place 8–11 December 2011 at the MGM Grand in Las Vegas, Nevada.

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.