Idée fixe

Idée fixe may refer to:


 * Idée fixe (psychology), a psychological disorder
 * Idée Fixe (album), an album by Aerolit
 * Dogmatix, the English name of an Asterix comics character, called Idéfix in French
 * Idée fixe (music), a recurring theme or motif, as in the Symphonie fantastique by Hector Berlioz