"Crystal" is a song by the English rock band New Order. It was released in August 2001 as the first single from their seventh album Get Ready. The song entered the UK charts at number 8, attracting considerable attention and praise as the band's comeback single, their first since 1993: on release Joe Tangari of Pitchfork Media called the song as "possibly one of New Order's best singles".Drowned in Sound rated it a 9/10 and described it as "fantastic" and the "confident, strutting return of a band that knows that the music industry has missed it." It is one of the band's fastest and most guitar-orientated singles. The song is notable for a remix contest in which there were thousands of entries around the world. It appears as the first track on the album in a slightly different version, with extended outro and intro.

Singer/guitarist Bernard Sumner originally gave the song to German record label Mastermind for Success, and it was recorded by label artist Corvin Dalek. However, DJ Pete Tong heard the song and declared it to be the best New Order single since "Blue Monday", leading Sumner to reconsider the gift and have New Order record and release it.

A version of the single was also released in Japan to promote the release of the New Order DVD 316, and has a different cover that resembles the 316 cover. B-sides for the single were 4 live audio tracks taken from the DVD.

The single was B-sided by a variety of remixes, and an original song titled "Behind Closed Doors".

All versions feature extensive backing vocals from Dawn Zee, mostly wordless. Zee has continued to perform with New Order on all their successive studio albums.

Stereogum placed the song at number ten in the list of their top ten best New Order songs.

The main music video, set to the album version, was directed by Johan Renck, produced by Nicola Doring through London production company Jane Fuller Associates and cinematographed by Fredrik Callinggård. It does not feature New Order; instead, it depicts a younger band miming to New Order's music and words. At the end, a large number of people come on stage to pull them off-stage.

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