| Operation: Doomsday | 
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| Released | October 19, 1999 | 
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| Recorded | 1997–1999 | 
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| Genre |  | 
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| Length | 58:20 | 
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| Label | Fondle 'Em | 
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| Producer | MF.Doom | 
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"Dead Bent" / "Gas Drawls" / "Hey!"Released: 1997
"Greenbacks" / "Go with the Flow"Released: 1997
"The M.I.C." / "Red & Gold"Released: 1998
"I Hear Voices Pt. 1"Released: 2001
 (2001 re-release)
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Operation: Doomsday is the debut studio album by British-American rapper MF Doom, released through Fondle 'Em Records on October 19, 1999 and reissued by Sub Verse Records in 2001 with a slightly altered track listing. It was his first solo release under the MF Doom moniker after previously performing as Zev Love X in the group KMD. Operation: Doomsday is regarded as one of the most influential albums in independent hip-hop history. A deluxe remastered version of the album was released by Doom's own Metal Face Records on October  24, 2011.