The Definitive Singles Collection 1984–2004 is a greatest hits album from Norwegian band A-ha, released on 11 April 2005. Despite the title, the album contains tracks from 1985–2002. The album contains 17 of their hits plus an enhanced video for the song "Take on Me". The track listing of this album is slightly different from the one on The Singles: 1984–2004. It marked the return of A-ha to the top 20 of the UK Albums Chart.