Billiard

Billiard or billiards may refer to:

Games

 * A, a type of shot in cue sports (see below)
 * Billiards: cue sports in general; the term "billiards" by itself is also sometimes used to refer to any of the following more specifically:
 * Carom billiards (also known as French billiards), games in general (a chiefly non-British usage)
 * Three-cushion billiards, even more specifically, the most popular form of carom billiards worldwide
 * The specific game of English billiards (a chiefly British, Irish and Australian usage)
 * Pool (cue sports) (pocket billiards) games, such as eight-ball and nine-ball, in general (a chiefly colloquial North American usage)
 * See the list of cue sports for various other games with "billiards" in their names; also more specifically:
 * Pin billiards, a fairly large number of billiard games that use a pin, or a set of pins or "skittles"
 * Bar billiards, a game combining elements of bagatelle and English billiards
 * Electric billiards, an obsolete term for pinball (from billard [sic] électrique in French, in which pinball is today called flipper, a borrowing from English)
 * Billiard table: The bounded table on which cue sports are played

Mathematics and physics

 * Billiard (number), the long-scale name used in most European languages for the number 1015 (called quadrillion in the short scale generally used in English)
 * Dynamical billiards, the mathematical theory of particle trajectories within a closed reflective boundary

People

 * Cora Billiard Wickham Sibley (née Billiard, 1884–1976), American painter, and wife of Robert Pelton Sibley
 * Harry Billiard (1883–1923), Major League Baseball pitcher
 * Maria Duchêne-Billiard (1884–?), French contralto of the Metropolitan Opera