Quadrant may refer to:

Companies

* Quadrant Cycle Company, 1899 manufacturers in Britain of the Quadrant motorcar * Quadrant (motorcycles), one of the earliest British motorcycle manufacturers, established in Birmingham in 1901 * Quadrant Private Equity, an Australian investment firm * Quadrant Records, an independent record label * Quadrant Televentures Ltd., a subsidiary of Videocon Telecom, India

Geography

* A quadrant or section in a city street nomenclature system, see Address (geography)#Quadrants * Quadrants of Washington, D.C.

Mathematics

Quadrant (circle) A circular sector, also known as circle sector or disk sector (symbol: ⌔), is the portion of a disk (a closed region bounded by a circle) enclosed by two radii and an arc, where the smaller area is known as the ''minor sector'' and the larger ...

, a circular sector equal to one quarter of a circle, or half a semicircle * Quadrant (plane geometry), a sector of a two-dimensional Cartesian coordinate system *

Quadrant (solid geometry) In technical drawing and computer graphics, a multiview projection is a technique of illustration by which a standardized series of orthographic two-dimensional pictures are constructed to represent the form of a three-dimensional object. Up to ...

Military

* , a Second World War British/Australian warship * First Quebec Conference, 1943 (codenamed "QUADRANT")

Science and technology

* Galactic quadrant, one out of four circular sectors in the division of the Milky Way galaxy * Quadrant (abdomen), a division of the abdominal cavity * Quadrant (architecture) a curve in a wall or vaulted ceiling of a building * Quadrant (instrument), an angle or time measuring instrument * Quadrant (semigraphics), a 2×2 semigraphical pixel array in computing

Places

* Quadrant Bus Station, Swansea Wales * Quadrant:MK, Network Rail's headquarters campus in Milton Keynes * Quadrant Park, a nightclub in Liverpool, Merseyside * Quadrant Shopping Centre, Swansea, Wales * The Quadrant, a housing estate in Kingston upon Hull, UK

Other

* ''Quadrant'' (album), a 1977 album by Joe Pass and Milt Jackson * Quadrant (college basketball), a performance measure derived from the Rating Percentage Index * ''Quadrant'' (magazine), an Australian literary and cultural journal *

Triumph Quadrant The so-called Triumph Quadrant (aka "Quadrent") was a "bitsa" designed and built in secret by Doug Hele in 1973. It was a 1,000 cc four-cylinder motorcycle made up from Trident A trident is a three- pronged spear. It is used for spea ...

, a four-cylinder motorcycle * A division of dentition - see Glossary of dentistry {{disambiguation