Medúlla is the fifth studio album by Icelandic recording artist Björk.

It was released on 30 August 2004 in the United Kingdom by One Little Independent Records and in the United States by Elektra Entertainment.

After the release of her electronic-influenced previous album Vespertine (2001), Björk intended to make an album almost entirely a cappella constructed with human vocals.

For the project, she collaborated with vocal artists such as Mike Patton of rock band Faith No More, beatboxers Rahzel and Dokaka, as well as Inuit throat singer Tanya Tagaq. The album’s title derives from the Latin word for “marrow”.