The Clancy Brothers' Greatest Hits is an original studio album of some of The Clancy Brothers' most popular hits re-recorded with Louis Killen.

The Clancys had performed each of these songs previously with different arrangements with their former partner Tommy Makem in the 1960s.

The recording was initially released as a double album.

A backing musician on a few of the tracks is Don McLean, best known for his song "American Pie".

In addition to including the entirety of the Greatest Hits album, the CD included four previously unreleased tracks from the Clancy Brothers' follow-up album Live!