Mysterion may refer to:
- Mysterion (film), a 1991 documentary film by Pirjo Honkasalo
- Mysterion (Last Exile), key secret riddle in the steampunk anime Last Exile
- Greek term for Sacred mysteries of Christianity
- Mysterion the Brave, second of the Kings of Quendor in the Zork computer game universe
- Mysterion, alter-ego of the character Kenny McCormick in South Park
- Durand Mysterion, stage name of Ron Easley, guitarist with Tav Falco's Panther Burns
- Stage name of Tommy Lindal, Norwegian heavy metal guitarist
- Track #10 on CD#6 of Dreamscapes, compilation by synthpop band Alphaville
- Track #3 on Impact Exciter, album by Japanese singer/songwriter Nana Mizuki
- Track #9 on Hell Is Here, a 1999 album by thrash metal band The Crown
- Custom car by "Big Daddy", Ed Roth
- "Mysterion Rises", an episode from the fourteenth season of South Park
disambiguation page lists articles associated with the title Mysterion.
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