The Lost Tracks of Danzig is a compilation album of American heavy metal band Danzig. The set showcases a number of previously unreleased songs, ranging from the band's first recording sessions in 1987–88 until the sessions for their 2004 studio album, Circle of Snakes.

Glenn Danzig mentioned a compilation of unreleased songs in several interviews as early as 1990, prior to the release of Lucifuge. Due to his touring schedule and various other projects, the material that comprises The Lost Tracks of Danzig was set aside for a number of years, and was finally confirmed to be under preparation in the summer of 2006. He was only able to start work on the project after gaining back the rights to Danzig's unreleased material from American Recordings. Originally scheduled for release on May 29, 2007, it was delayed twice before its official release in North America on July 10, 2007, and in Europe one week earlier. The set was made available over iTunes in June 2007.

Glenn Danzig has said in various interviews and in the compilation's liner notes that he does not consider these songs "throw-aways". It was often the case that these unreleased songs didn't fit the theme or concept of the album for which they were originally recorded. Danzig explained: "The songs that make it onto the final album [must] 'fit' or 'flow' together as a whole. Consequently, some tremendous Danzig songs have never been released, not because they weren't great, but because they didn't fit the overall vibe of the particular album, or for other reasons."

When Glenn Danzig began the Lost Tracks project, the songs were in various stages of completion - some were still in demo form, some had no vocals, and some needed a different mix or new instrument tracks. After tracking down and reviewing the original tapes, over thirty of which had to be baked before undergoing digital conversion due to their age, Danzig entered the studio and completed the tracks, finishing all vocal and instrumental recording himself. The project took nine months to complete.

The songs "Pain Is Like An Animal" and "When Death Had No Name" were written toward the tail end of Glenn Danzig's tenure in Samhain. In the liner notes Glenn Danzig says "Pain Is Like An Animal" was "originally a Samhain song that became one of the first Danzig tracks".

The album includes "White Devil Rise", recorded during the sessions for Danzig 4 in response to racist comments by Louis Farrakhan and his use of the term "The White Devil" to describe the white race. Danzig has explained that the song is his conjecture as to what would happen if Farrakhan incited the passive white race to rise up and start a race war: "No one wants to see a race war. It would be terrible, so the song's saying, 'Be careful what you wish for.'"

Glenn Danzig spoke fondly of the track "Satan's Crucifiction", describing it as one of his favorite songs on the set. According to Danzig, the song was written to anger American Recordings, the band's label at the time. Eerie Von explained it had also been played during rehearsals to scare off unwelcome executives from the label who might happen upon the band's recording sessions. The song title is misspelled "Crucifiction", perhaps intentionally as a pun. The song was performed live for the first time in the fall of 2007, and was a regular in the Danzig set-list during the fall 2008 'Blackest of the Black' tour.

The 1992 version of "When Death Had No Name", recorded during the How the Gods Kill sessions and originally available as a B-side on the 1992 "Dirty Black Summer" single, is one of three tracks on the set to have been previously released. "Deep", originally recorded and intended for Danzig 5: Blackacidevil, was available on Songs in the Key of X, the soundtrack to The X-Files television series. The mix used on the X-Files soundtrack differs very slightly in its final second of audio, ending abruptly rather than with a brief echo as on Lost Tracks. The remix "Underbelly of the Beast" previously appeared on the soundtrack to The Crow: Salvation in 2000.