Quadrant may refer to:

• A sector equal to one quarter of a circle, or half a semicircle
• HMS Quadrant (G11), a Second World War British/Australian warship.
• One of four regions of a Cartesian coordinate system#Two-dimensional coordinate system
• One of four Address (geography)#Quadrants in a city's street system.
• A measuring instrument similar to a sextant.
• One of the four Galactic quadrants (Star Trek) in Star Trek.
• Quadrant (magazine), an Australian journal
• A 90-degree segment of an astrological chart is called a quadrant
• An English automobile, manufactured from 1905 to 1906
• Quadrant Shopping Centre, Swansea
• The Quebec Conference (codenamed "QUADRANT")

Quadrant (Begriffsklärung)