The nadir is a low or downward point of reference.
Nadir may also refer to:
Nadir (name), a surname and given name Nadir (topography), a point of lowest local elevation Nadir (astronomy), the point directly underneath a celestial observer Nadir (web portal), a German web portal Nadir, U.S. Virgin Islands, a settlement Nadir (horse) (1955–1978), an American Thoroughbred racehorse Nadirs (autobiography), by Herta Müller "The Nadir", an episode of the television series Fargo The Nadir, a fictional tribe in the novel Legend and other works by David Gemmell "Nadir", a song by Byzantine from Oblivion Beckons "Nadir", a song by Sadist from Above the Light Network Anomaly Detection and Intrusion Reporter, an intrusion detection system Nadir crater, a undersea feature on the Guinea Plateau in the Atlantic Ocean Nadir objective vector, a concept in Multi-objective optimization
See also Nadir of American race relations, a term for the period from the end of Reconstruction to the 1920s Nadira, a given name