Nightmare

Nightmare, A Nightmare, or The Nightmare may refer to:

• "A Nightmare", a short story by Anton Chekhov
• "Nightmare", a poem by Gilbert Keith Chesterton
• "A Nightmare", a song by W. S. Gilbert and Arthur Sullivan
• "A Nightmare", a poem by Don Marquis
• "Nightmare", a poem by Clark Ashton Smith
• "Nightmare!", a short story by Francis Stevens
• "The Night-Mare", a poem by Johann August Apel translated by Wilhelm Klauer-Klattowski