Orion edo Ehiztaria neguan ikus daitekeen konstelazio handia da. Greziar mitologiako ehiztaritik datorkio izena; inguruan Eridanus (ibaia), bere bi ehiza txakur Canis Major eta Canis Minor, Taurus-en (Zezena) aurka borrokan irudikatzen da zeruan. Lepus (Erbia) ehizatzen ere. Orion konstelazioak izar oso distiratsuak dituenez antzinako zibilizazioetan konstelazio ezaguna zen, Betelgeuse (izar gorri handia), Rigel, Bellatrix, Alnitak eta Saiph. Esne bidean kokaturik, ortzi sakoneko objektu asko ditu, besteak beste Zaldiburu nebulosa, Oriongo nebulosa handia M42, Sugar nebulosa edo Barnard begizta.

Orion's current name derives from Greek mythology, in which Orion was a gigantic strong hunter of ancient times. The constellation is one of the most recognizable winter constellation located on the celestial equator and visible throughtout the world. The hunter in Greek mythology, around the hunter Eridanus (River), two dogs Canis Major and Canis Minor faighting with Taurus. Its brigthest stars are Rigel (a blue-white star) and Betelgeuse (red supergiant). Orion has many deep-sky objets, amound of them the Horsehead nebula, Orion nebula (M42), Flame nebula and Barnard's Loop.