Primary or primaries may refer to:

Arts, entertainment, and media

Music

Groups and labels

* Primary (band), from Australia * Primary (musician), hip hop musician and record producer from South Korea * Primary Music, Israeli record label

Works

* Primary (album), ''Primary'' (album) by Rubicon (2002) * Primary (song), "Primary" (song) by The Cure * "Primary", song by Spoon from the album ''Telephono''

Other uses in arts, entertainment, and media

* Primaries or primary beams, in E. E. Smith's science-fiction series ''Lensman'' * Primary (film), ''Primary'' (film), American political documentary (1960)

Computing

* PRIMARY, an X Window selection * Primary data storage, computer technology used to retain digital data * Primary server, main server on the server farm

Education

* Primary education, the first stage of compulsory education * Primary FRCA, academic examination for anaesthetists in the U.K. * Primary school, school providing primary education

Mathematics

* p-group, ''p''-group of prime power order * Primary decomposition into primary ideals * Primary ideals, concept in commutative algebra * Primary number, positive integer power of a prime number

Politics

* Primary election, election by which a political party selects and nominates a candidate * Primary vote, the total of first-preference votes in the Australian electoral system

Science and mechanics

* Primary (astronomy), the larger of two co-orbiting bodies * Primary (chemistry), term used in organic chemistry * Primary, the oldest period in the Geologic time scale (obsolete) * Primary, a stage in a nuclear weapon design, thermonuclear explosive * Primary circuit, electrical circuit in a transformer that receives current, as opposed to secondary circuit * Primary field, type of field in conformal field theory * Primary mirror, principal light-gathering surface of a reflecting telescope * Primary power line, electric power transmission line fed to or from a transformer * Primary feathers, flight feathers attached to the manus ("hand") in the wings of birds * Primary color

Other uses

* Primary (LDS Church), a children's Sunday School organization * Primary (musician) (born 1983), South Korean * Primary data (or raw data), a term for data collected from a source * Primary Flight Training, in the U.S. Navy * Primary source, original materials * Primary disease, a disease that is due to a root cause of illness