List of unreleased Marilyn Manson projects
These are projects that are known to exist in a completed state, yet remain unreleased for various reasons
- "Thrift" - A Marilyn Manson & the Spooky Kids demo tape.
- "Teen Dabbler", also known as "Dungeon Master (Crippled Groom, Piss in the Wound)" - An early Marilyn Manson & the Spooky Kids song.
- "No Class / Styrofoam Raps" - An early Marilyn Manson & the Spooky Kids song.
- "Chalkboard Girl" - A Marilyn Manson & the Spooky Kids unfinished song.
- "Eating Jello Biafra" - A Marilyn Manson & the Spooky Kids unfinished song.
- "In the Ghetto" - A Mac Davis song probably covered during the "Holy Wood (In the Shadow of the Valley of Death)" sessions.
- "Little Child" - A Wes Montgomery cover recorded during the Holy Wood (In the Shadow of the Valley of Death) sessions.
- "Jack Eats Dinner" - A demo recorded during the Holy Wood (In the Shadow of the Valley of Death) sessions.
- "Compass and the Ruler" - A demo recorded during the Holy Wood (In the Shadow of the Valley of Death) sessions.
- "Don't You Want Me" - A Human League cover featuring Shirley Manson initially recorded for Lest We Forget – The Best Of.
- "Airborne" - An instrumental track for the Resident Evil soundtrack. 
- "The Whole Is Greater than the Sum of its Parts" - An instrumental track for the Resident Evil soundtrack.
- "The Red Queen" - An instrumental track for the Resident Evil soundtrack.
- "The Queen Explains the Needs" - An instrumental track for the Resident Evil soundtrack.
- "Necrosis" - An instrumental track for the Resident Evil soundtrack.
- "Suppressing Early Signs of Infection" - An instrumental track for the Resident Evil soundtrack.
- "The Dead Walk" - An instrumental track for the Resident Evil soundtrack. Available on MansonWiki
- A full album titled The Factory was mentioned by John 5 being recorded during Holy Wood (In the Shadow of the Valley of Death) in an interview in 2010 
- "Heaven on the Brain" - An unreleased demo song recorded sometime during the Antichrist Superstar recording sessions
- "Groupie" - A short film by Manson.
- The Holy Wood novel.
Forthcoming or potential projects
These are projects that were mentioned in the past but their current status is unknown. They may still be in the process of being completed or they may have been put on hold or abandoned.
- The original 25-minute recording of "I Want to Kill You Like They Do in the Movies".
- "Arma-goddamn-motherfuckin-geddon (Lady Gaga remix) 
- The Holy Wood film.
- A DVD reissue of Dead to the World.
- A DVD reissue of God Is in the T.V..
- Phantasmagoria: The Visions of Lewis Carroll - A full length feature film by Manson.
- Marilyn Manson's fifth video album.
- "Pistol Whipped" music video.
- Marilyn Manson's second autobiography.
- A coffee table art book of images related to the Holy Wood novel and the album by Manson and longtime art collaborator P. R. Brown.
- Quintif - A coffee table book displaying Marilyn Manson's paintings. Also potentially titled The Death of Art.
Leaked recordings later released
- At a time before the ubiquity of peer-to-peer file sharing, "The Dope Show" leaked three weeks before the intended release of Mechanical Animals and played "nearly a dozen times" on New York radio station WXRK (92.3 FM) and its Los Angeles-based sister station, KROQ (106.7 FM), on the weekend of July 31 to August 2, 1998. Interscope neither confirmed nor denied that the leak originated from them but joined Hole's label, DGC Records, in issuing a cease and desist order to WXRK on August 3. In spite of this, the song was subsequently recorded and converted by a fan into a near CD-quality MP3 and made available for download on an unofficial fan site soon after. The following weekend, San Francisco radio station Live 105 (105.3 FM) played both singles again. "The Dope Show" was officially released when Mechanical Animals released on September 14, 1998.
- On May 1, 2007, Eat Me, Drink Me was leaked onto several peer-to-peer networks. It was later released worldwide on June 5, 2007.
- In March 2009, early mixes of five songs from The High End of Low leaked to the Internet. On March 25 was "Arma-goddamn-motherfuckin-geddon" and "WOW", on March 28 was "Four Rusted Horses" and on March 31 was "Leave a Scar" and "Into the Fire". On April 15 "Devour" surfaced, edited by the source of its leak to feature comical Arnold Schwarzenegger quotes. Finally on May 19, 2009, The High End of Low was leaked to the Internet, only hours short of its Japanese release.
- While not recordings, on April 2, 2012, lyrics for every Born Villain song leaked online, nearly a month before the release of the tracks they represented.
- THE THROAT - Marilyn Manson's Journal 
- Provider Module - The Devil's Prefect: Interview with John 5 
- Before They Were Rock at BMI Repertoire
- Combad at BMI Repertoire
- Dateline at BMI Repertoire
- Dateline at BMI
- Domi Nation at Repertoire
- Year in Rock 97 at BMI Repertoire
- Was Lady Gaga supposed to mix Arma-Goddamn-Motherfuckin-Geddon? 
- On February 14, 2015, Agata Alexander shared a possible outtake from a photo session that's currently rumoured to be a unreleased video for the song.
- Kaufman, Gil (1998-08-04). "Marilyn Manson, Hole Tunes Leaked On Radio, Net". VH1. MTV Networks (Viacom). http://www.vh1.com/news/articles/500067/19980804/index.jhtml. Retrieved 2011-07-10.
- "S.F. Station Jumps Gun On Manson, Hole Singles". VH1. MTV Networks (Viacom). 1998-08-12. http://www.vh1.com/news/articles/500255/19980812/index.jhtml. Retrieved 2011-07-10.