Kid A is the fourth studio album by the English rock band Radiohead, released on 2 October 2000 by Parlophone. They recorded Kid A with OK Computer producer Nigel Godrich in Paris, Copenhagen, Gloucestershire and their hometown Oxford, England.

After the stress of promoting Radiohead's acclaimed 1997 album OK Computer, songwriter Thom Yorke wanted to diverge from rock music. Drawing influence from electronic music, ambient music, krautrock, jazz, and 20th-century classical music, Radiohead used instruments such as modular synthesisers, ondes Martenot, brass and strings. They processed guitar sounds, incorporated samples and loops, and manipulated their recordings with software such as Pro Tools and Cubase. Yorke wrote many lyrics by cutting up words and phrases and assembling them at random.

Radiohead considered releasing the work as a double album, but decided the material was too dense; a second album of material from the sessions, Amnesiac, was released the following year.

Kid A was widely anticipated. In a departure from industry practice, Radiohead released no singles or music videos and conducted few interviews and photoshoots. Instead, they became one of the first major acts to use the internet as a promotional tool; Kid A was made available to stream and was promoted with short animated films featuring music and artwork. Bootlegs of early performances were shared on filesharing services, and the album was leaked before release.