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