Backlash may refer to:
- Backlash (engineering), clearance between mating components
- Backlash (sociology), an adverse reaction to something that has gained prominence
- Backlash (pressure group), a UK group opposing the 2008 law criminalising possession of "extreme pornography"
In literature:
- Backlash: The Undeclared War Against American Women, a book by Susan Faludi
- Backlash (Star Wars novel), a novel by Aaron Allston
- Backlash (Marc Slayton), a fictional character in the WildStorm comics universe
- Backlash (Jodi Slayton), another WildStorm character
- Backlash (originally: A Plague on Both Your Causes), a novel by John Brunner
In music:
- Backlash (Bad English album)
- Backlash (Freddie Hubbard album)
- Backlash, an album by Nina Simone
- Backlash, a song by Joan Jett and the Blackhearts
- Backlash, band with trip hop electronica, drum n' bass and Industrial influences
- Backlash, a single from the album Minus The Machine by 10 Years.
In film:
- Backlash (1947 film), an American film starring Jean Rogers
- Backlash (1956 film), an American western starring Richard Widmark
- Backlash (1986 film), an Australian drama directed by Bill Bennett
- Backlash (1994 film), an American film starring Sunny Doench
In other media:
- WWE Backlash, an annual World Wrestling Entertainment event
- Backlash, a Demolition Vehicle in the video game Blast Corps