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.