Unreleased (1998–2010) is the fourth compilation album by Australian alternative rock band Powderfinger, released on 27 November 2020.

The album comprises ten previously unheard and unreleased tracks recorded between the years of 1998 and 2010, and stored on various hard drives and tapes within the band's archives.

[4] In August 2020, Powderfinger told Double J that they had stumbled across a range of recordings in their vaults while searching for extra material to accompany the 20th-anniversary reissue of their Odyssey Number Five album.

[4] The album's release date and track listing was confirmed on 15 October 2020, with guitarist Darren Middleton telling Double J, "Essentially what you're going to hear is the band spanning about 10 years, with songs that for one reason or another just didn't make the cut at the time, or just didn't suit the purposes of whatever we were doing.

Vocalist Bernard Fanning said, "'Day by Day' was never completed until we opened the archives and went sniffing around for tracks that had never been released.