When the Sun Goes Down is the ninth album album by country music singer Kenny Chesney, released on February 3, 2004. It debuted at number one on the U.S. Billboard 200, selling about 550,000 copies in its first week. It currently has certified sales in excess of four million copies.

The tracks "There Goes My Life", "When the Sun Goes Down", "I Go Back", "The Woman with You", "Anything but Mine", and "Keg in the Closet" were all released as singles. Also included on this album is the song "Some People Change", which would later be recorded (and released as a single) by Montgomery Gentry on their 2006 album Some People Change.