Bad Dream(s) may refer to:

• Nightmare

• Bad Dreams, a novel by Fyodor Sologub
• Bad Dreams, a novel by Kim Newman
• Bad Dreams (Winnick comics), a five issue 2014 comic book series by Gary Winnick

• Bad Dreams (film), a 1988 horror film
• "Bad Dreams" (The Wire), a 2003 episode of the TV series The Wire
• "Bad Dreams" (Fringe), a 2009 episode of the television series Fringe

• Bad Dream (album), an album by Dimmi Argus
• Bad Dreams (Swollen Members album), 2001
• Bad Dreams (Ike Turner album), 1973
• Bad Dreams, an album by Blondel

• "Bad Dream" (song), a 2017 song by The Jungle Giants
• "A Bad Dream", a 2007 song by Keane
• "Bad Dream", a song by Exo from Don't Mess Up My Tempo
• "Bad Dreams" (song), a 2024 song by Teddy Swims
• "Bad Dreams", a song by Joni Mitchell from Shine
• "Bad Dream", a 2024 single by Paul Simon and Edie Brickell