Unsound may refer to: Unsound (Mission of Burma album), 2012 Unsound (compilation album), a 2006 compilation album on Epitaph Records Unsound Festival, a music festival that takes place in Krakow, Poland, and around the world See also Mental disorder ("unsound mind") Soundness, a concept in deductive reasoning (sound or unsound argument) Unsound Methods, a 1997 music album by Recoil Unsounded, a 2010 web graphic novel by Ashley Cope