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 equal to one-quarter of a circle
  • Quadrant (plane geometry), a sector of a two-dimensional Cartesian coordinate system
  • Quadrant (solid geometry)

Military

  • , a Second World War British/Australian warship
  • First Quebec Conference, 1943 (codenamed "QUADRANT")
  • The quadrant sight, an M203 grenade launcher assembly attachment that gets inserted on the left side of the carrying handle on M16 rifles.

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, cultural and centre-right political journal
  • Triumph Quadrant, a four-cylinder motorcycle
  • A division of dentition - see Glossary of dentistry
  • Team Quadrant, a video content, apparel and esports team created by Formula One driver Lando Norris