Truman syndrome, officially known as Truman Show delusion, is a type of misunderstanding in which the person trusts that their lives are staged reality shows, or that they are existence watched on cameras. The term was invented in 2008 by brothers Joel Gold and Ian Gold, a psychoanalyst and a neurophilosopher, correspondingly, after the film The Truman Show.

When it comes to the show, The Truman Show is a 1998 comedy drama film absorbed by Peter Weir and written by Andrew Niccol. Actor Jim Carrey plays Truman Burbank, a man who learns he is living in a built reality televised globally everywhere the clock. Since he was in the womb his entire life has been onscreen, and all the people in his life have been paid performers. As he discovers the truth about his being, Burbank fights to find an seepage from those who have skillful him his entire life.

The Truman Show misunderstanding is not formally recognized nor listed in the Analytic and Statistical Physical of the American Psychiatric Connotation.