Nothing Is Sound is the fifth studio album by American alternative rock band Switchfoot. It was released on September 13, 2005 and debuted at number three on the Billboard 200. The first single from the album was "Stars," which was the number one most-added song on Modern Rock Radio and received much airplay on alternative rock stations upon release. A second single, "We Are One Tonight," was released in early 2006, though it did not enjoy much success on the Billboard charts.

The album was marred by major controversy over the inclusion of XCP copy protection distributed on all copies of the disc. This led to bassist Tim Foreman posting a detailed work-around on the band's website (which was promptly removed by Columbia Records). Nothing Is Sound was at the forefront of the Sony BMG CD copy prevention scandal, which eventually led to the recall of all CDs that contained the protection.