"Mogwai Fear Satan" (sometimes referred to as "Fear Satan") is a song by Scottish post-rock group Mogwai, the closing track for their 1997 debut studio album, Mogwai Young Team.

"Mogwai Fear Satan" is a sixteen-minute-long instrumental, using basic rock instrumentation; guitars, bass, and drums, along with flute. The origin of the song title stems from bassist Dominic Aitchison’s, the only religious member of Mogwai, fear of the Devil, due to his Catholic upbringing.

"Mogwai Fear Satan" begins with a guitar melody riff consisting of three chords by Stuart Braithwaite and John Cummings, which is soon joined by bass played by Dominic Aitchison and a frantic drumbeat played by Martin Bulloch, which gradually fades in. The same guitar riff is repeated throughout the song, at times heavily distorted. During the quiet parts of the song, in the buildup to the explosion of sound and feedback which Mogwai are known for, there is a quiet, haunting flute melody played by Shona Brown over tribal-sounding drums. The song slowly fades out into feedback and noise.

There are five official remixes of "Mogwai Fear Satan". The EP Mogwai Fear Satan Remixes (released in March, 1998) includes the Mogwai Remix, the μ-Ziq Remix, the Surgeon Remix, and the My Bloody Valentine Remix. The remix album Kicking a Dead Pig (released in May, 1998) features the Mogwai Remix, LP Version. A later re-issue of Kicking a Dead Pig included Mogwai Fear Satan Remixes on a separate CD.

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