Nine Days Wonder may refer to:
- William Kempe's "Nine Days Wonder" in 1600, in which he morris danced from London to Norwich
- "The Nine Days Wonder", 1975 episode of the period drama Upstairs, Downstairs
- A Nine Days' Wonder, 1875 play by Charles Hamilton Aide
- "A Nine Days' Wonder", 2005 Japanese pop song by Akeboshi
- "A Nine Days Wonder", song by Theatre of Tragedy from their 2009 album Forever Is The World