Billiard

Billiard or billiards may refer to:

Games

A billiard, 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 électrique in French, in which pinball is today called flipper, a borrowing from English)

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

Cora Billiard Wickham Sibley (née Billiard, 1884–1976), American painter, and wife of Robert Pelton Sibley
Harry Billiard (1883–1923), Major League Baseball pitcher
Lynne Billard (1943-), American Statistician
Maria Duchêne-Billiard (1884–?), French contralto of the Metropolitan Opera
Pierre Billard (statistician), French Statistician