"Mademoiselle Juliette" (English: "Miss Juliet") is a song by French singer Alizée, which was released as the first single from her third studio album Psychédélices.

Alizée appeared on French radio station NRJ three days before the release to promote the song.

[2] The single was first made available in the online French music store of Virgin Megastores on 27 September 2007.

The song begins with techno synths playing followed by vocals and drum beat, then progresses into a fast tempo electropop beat with twinkling synths played by guitars, synthesizer keyboards, and snare drums.

The music video was directed by Julien Rotterman and shot during one day on the north side of Paris, at the château of Champlâtreux.