"Mad World" is a 1982 song by Tears for Fears, covered by Michael Andrews and Gary Jules (2001) and others.
Mad World may also refer to:
- Mad World, a 2010 film directed by Cory Cataldo
- Mad World, a 2016 Hong Kong drama film directed by Wong Chun
- Mad World, a 2018 film directed by Paul Tanter
- MAD World, the international network of MAD TV
- MadWorld, a 2009 video game
- "Mad World" (Hardwell song), 2015
- "Mad World", a song by Krokus from Rock the Block
- "Mad World", a song by Within Temptation from Resist
- Mad World: Evelyn Waugh and the Secrets of Brideshead, a 2010 book by Paula Byrne
- "Madworld", a fictional location in the 1979 Star Trek novel Trek to Madworld