Interval

Interval may refer to:

Mathematics and physics

 * Interval (mathematics), a range of numbers
 * Partially ordered set, its generalization from numbers to arbitrary partially ordered sets
 * A statistical level of measurement
 * Interval estimate
 * Interval (graph theory)
 * Space-time interval, the distance between two points in 4-space

Dramatic arts

 * Intermission, (British English: interval), a break in a theatrical performance
 * Entr'acte, a French term for the same, but used in English often to mean a musical performance played during the break
 * Interval (play), a 1939 play by Sumner Locke Elliott
 * Interval (film), a 1973 film starring Merle Oberon

Music

 * Interval (music), the relationship in pitch between two notes
 * Intervals (band), a Canadian progressive metal band
 * Intervals (See You Next Tuesday album), 2008
 * Intervals (Ahmad Jamal album), 1980

Sport

 * Playing time (cricket), the breaks between play in cricket
 * Interval training, a training technique used by runners and cyclists

Other uses

 * Interval Research Corporation, a technology think tank founded by Paul Allen
 * Recess (break), a break between classes, also called "interval" in New Zealand
 * Jerry Interval (1923–2006), American portrait photographer and educator