The Illusionist is a 2006 American romantic mystery film written and directed by Neil Burger, and starring Edward Norton, Paul Giamatti, and Jessica Biel. Based loosely on Steven Millhauser's short story "Eisenheim the Illusionist", it tells the story of Eisenheim, a magician in turn-of-the-century Vienna, who reunites with his childhood love, a woman far above his social standing. It also depicts a fictionalized version of the Mayerling incident.

It premiered at the 2006 Sundance Film Festival and opened the 2006 Seattle International Film Festival; it was distributed in limited release to theaters on August 18, 2006, and expanded nationwide on September 1. It was a commercial and critical success.