Ragged Atlas is a studio album by Fred Frith's United States experimental rock group Cosa Brava. It was recorded in San Francisco in December 2008 and was released by Intakt Records in Switzerland on March 5, 2010. Ragged Atlas was the band's first album, and is largely instrumental with a little singing on five of the thirteen the tracks. Frith composed all the music, with lyric contributions on "Lucky Thirteen" by Rebby Sharp, a singer/guitarist Frith had worked with in Orthotonics.