X&Y is the third studio album by British rock band Coldplay. It was released on 6 June 2005 by Parlophone in the United Kingdom, and a day later by Capitol Records in the United States. The album was produced by Coldplay and producer Danton Supple. It is noted for its troubled and urgent development, as well as Phil Harvey's brief departure from the band. Producer Ken Nelson was originally tasked with producing the record; however, many songs written during his sessions were discarded due to the band's dissatisfaction with them. The album's cover art is a combination of colours and blocks, which is a representation of the Baudot code.

The album contains twelve tracks and an additional hidden song, "Til Kingdom Come", which is listed as "+" on the disc label and inside the record's booklet. It was originally planned for American country star Johnny Cash to record it with lead singer Chris Martin, but Cash died before he was able to do so. The song "Talk" appeared in the track listing, although after it leaked online in early 2005 it was thought to have been downgraded to a B-side for the album's subsequent single releases.

X&Y was released after a considerable amount of global anticipation. Overall reaction to the album was generally positive. Furthermore, it was a significant commercial success, reaching the number-one position in the charts of 32 countries around the world, including the United Kingdom (where it had the third biggest sales week in history at the time) and the United States (where it became Coldplay's first album to top the Billboard 200 chart). With over 8.3 million copies sold worldwide, X&Y was the best-selling album of 2005, accumulating over 13 million units as of December 2012. It spawned the singles "Speed of Sound", "Fix You", "Talk" and "The Hardest Part".