In Rainbows is the seventh studio album by the English rock band Radiohead. It was self-released on 10 October 2007 as a pay-what-you-want download, followed by a physical release internationally through XL Recordings on 3 December 2007 and in North America through TBD Records on 1 January 2008. It was Radiohead's first release after their recording contract with EMI ended with their album Hail to the Thief (2003).

Radiohead began work on In Rainbows in early 2005. In 2006, after their sessions with the producer Spike Stent proved fruitless, they re-enlisted their longtime producer, Nigel Godrich. Radiohead recorded in the country houses Halswell House and Tottenham House, the Hospital Club in London, and their studio in Oxfordshire, using conventional rock instrumentation plus electronic instruments, strings, piano and the ondes Martenot. The lyrics are less political and more personal than previous Radiohead albums.

Radiohead released In Rainbows online and allowed fans to set their own price, saying this liberated them from conventional promotional formats and removed barriers to audiences. It was the first such release by a major act and drew international media attention. Many praised Radiohead for challenging old models and finding new ways to connect with fans, while others felt it set a dangerous precedent at the expense of less successful artists.

Radiohead promoted In Rainbows with webcasts, music videos, competitions and a worldwide tour. "Jigsaw Falling into Place" and "Nude" were released as singles; "Nude" became Radiohead's first US top-40 song since their debut single "Creep" (1992). The retail release of In Rainbows topped the UK Albums Chart and the US Billboard 200, and by October 2008 it had more than three million copies worldwide. It was the bestselling vinyl record of 2008 and is certified platinum in the UK and Canada and gold in the US, Belgium and Japan. In Rainbows received acclaim, winning Grammy Awards for Best Alternative Music Album and Best Boxed or Special Limited Edition Package, and was ranked one of the best albums of the year and the decade by various publications. Rolling Stone included In Rainbows in its updated lists of the 500 Greatest Albums of All Time.