The Greatest Hits is the first compilation album released by the British girl group Atomic Kitten; the album was released following the announcement of the group's split. It was released in the United Kingdom on 5 April 2004 by Virgin Records. It contains all of the group's chart hits from the group's three studio albums Right Now (2000), Feels So Good (2002) and Ladies Night (2003) with the exception of their UK Top 20 hit "Follow Me" from 2000. "Right Now 2004" was released as the album's lead single on 29 March 2004. Although Kerry Katona does not appear on the cover of the album, her vocals do appear on "I Want Your Love" and "See Ya", although Frost's vocals appear on "Whole Again", which Katona originally featured on.
The album peaked at #5 in the UK and was certified Gold. The album has been released with the Copy Control protection system in some regions.