"Crystalline" is a song by Icelandic artist Björk, released as the lead single from her seventh album Biophilia.

The release of the song was preceded by three teasers: on the first one, entitled "Road to Crystalline" we can see Björk driving her Hummer through a road in Iceland while playing an excerpt of a demo version of the song; on the second one, we could see one of the new instruments developed for the Manchester performances, that also plays on the track: the 'Gameleste', a celesta which was modified by Icelandic Organ builder, Björgvin Tómasson and British Cymbalsmith and Gong maker, Matt Nolan so that it sounds like Gamelan and could be played remotely by MIDI or even an iPad;[6] and on the third teaser, recording sessions of the remix featuring Omar Souleyman were shown.

After the bridge, the song features a gameleste solo, and consequently ends with a breakcore section which uses the Amen break.

Björk took inspiration for the song from cities and buildings: I've sat a lot of my life in buses and taxis from 20 years of touring and somehow all these different types of intersections have gone on file in my brain.

Part of my obsessive nature wants to map out each intersection in the world and match it with a song… To me crystal structures seem to grow in a similar way.The music video for "Crystalline" was recorded on 26 May and was directed by long-time collaborator Michel Gondry.

The app for "Crystalline" is a video game that uses the iPod Touch/iPhone/iPad's tilt feature to move a crystal through various tunnels.

Björk debuted the songs during a series of performances at the Manchester International Festival in England between 27 June and 16 July 2011.