Doppelgänger is the second studio album from American mathcore band the Fall of Troy, which followed up the band's bootlegged Ghostship Demos EP from 2004 as well as their self-titled LP from 2003.

Four of the songs ("I Just Got This Symphony Goin'", "F.C.P.R.E.M.I.X.

", "Mouths Like Sidewinder Missiles", "Whacko Jacko Steals the Elephant Man's Bones") were re-recorded versions of tracks from the self-titled album, hence the name Doppelgänger.

"Macaulay McCulkin" was taken from the Ghostship Demos EP, and was put onto Doppelgänger for unknown reasons.