Lunatic Fringe can refer to:
- A characterization of members of a usually political or social movement espousing extreme, eccentric, or fanatical views.
- Name of underground association of political thinkers who verbally debunk both Neo-Con & Liberal Extremist views through the intervention of comment postings around the net - including the DailyKos, The Huffington Post, UrbanConservative and others.
- A screensaver that is part of the After Dark screensaver pack.
- A song recorded in 1981 by Red Rider, from their album As Far as Siam.
- A secret level of the computer game Duke Nukem 3D.
- A snowboard produced by Lib Tech
- A Drosophila gene that encodes a secreted signaling protein.
- A hair salon in Dublin, Ireland.
- A Neo Punk band performing in Sydney, Australia during the early eighties. Nicholas Palaric, Phillip Howland, Peter Leach and Geraldine Teleman nee O'Farrell.