Équinoxe (English: Equinox) is the fourth studio album by French electronic musician and composer Jean-Michel Jarre, released in December 1978 on the Disques Dreyfus record label, with license to Polydor.
Jarre had developed his sound, employing more dynamic and rhythmic elements, particularly a greater use of sequencing on basslines. Much of this was achieved using custom equipment developed by his collaborator Michel Geiss. The album is presented as two suites of music, each consisting of 4 parts and taking up one side of the vinyl release of the album. The separate tracks on the record smoothly segue into each other to this effect.