The Great Impostor was a 1961 American comedy-drama film about Ferdinand Waldo Demara.

The Great Impostor or The Great Imposter may also refer to:

• The Great Impostor, a 1959 book by Robert Crichton about Ferdinand Waldo Demara upon which the film is loosely based
• The Great Impostor (1918 film), a British silent drama film
• "(He's) The Great Imposter", a 1961 song by The Fleetwoods
• Barry Bremen (1947–2011), known by the nickname "The Great Imposter"
• Ferdinand Waldo Demara (1921–1982), known by the nickname "The Great Impostor"

This disambiguation page lists articles associated with the title The Great Impostor.
If an internal link led you here, you may wish to change the link to point directly to the intended article.