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Look up mysterious or mysteriousness in Wiktionary, the free dictionary.
Mysterious may refer to:
- Mysterious (album), a 1988 album by Shizuka Kudō
- "Mysterious" (song), a 2005 song by Jentina
- "Mysterious", a song by Scorpions from the 1999 album Eye II Eye
- Mysterious Walker (1884-1958), American baseball player
- Mysterious (horse) (1970–1988), thoroughbred racehorse