"Duchess" is a song by the British band Genesis, appearing as the second track on their 1980 album, Duke.

Part of the album's "hidden suite" which also included "Behind the Lines," "Guide Vocal," "Turn It On Again," "Duke's Travels" and "Duke's End," the lyrics tell the story of a rise and fall of a diva from the beginning of her career, to her superstardom, to her decline in public opinion. At 6:26, it is the second longest song on the album, and is also notable for being the first Genesis song to use a drum machine.

The band made a video for the song, of which an edited version was released as a single in the UK. It showed Phil Collins, Tony Banks and Mike Rutherford playing at various points in an empty auditorium. The drum machine used in the song is shown at the beginning of the video.