Caseyology is the sixth, fifth full-length, studio album by American punk rock band D.I., released in 2002 on Cleopatra Records.

Despite the title, it's technically not a compilation album, but it does feature re-recordings and live versions of selected songs from the band's previous releases.

Much confusion has sprung up about the Caseyology album.

It wasn't listed on their official website at the Wayback Machine (archived December 5, 2006), and the music press often referred to 2007's On the Western Front as the group's first release since State of Shock in 1994.

Some sources list it as a compilation album.