( ) is the third full-length album from Icelandic post-rock band Sigur Rós, first released in October 2002.

It comprises eight untitled tracks, divided into two parts: the first four tracks are lighter and more optimistic, while the latter four are bleaker and more melancholic. The two-halves are divided by a 36-second silence, and the album opens and closes with a click of distortion. Lead singer Jón Þór Birgisson ("Jónsi") sang the album's lyrics entirely in "Hopelandic", a made-up language consisting of gibberish words.

( ) reached No. 51 on the Billboard 200 and received acclaim from music critics.