Hannibal is a psychological horror novel by American author Thomas Harris, published in 1999. It is the third in his series featuring Dr. Hannibal Lecter and the second to feature FBI Special Agent Clarice Starling. The novel takes place seven years after the events of The Silence of the Lambs and deals with the intended revenge of one of Lecter's victims. It was adapted as a film of the same name in 2001, directed by Ridley Scott. Elements of the novel were incorporated into the second season of the NBC television series Hannibal, while the show's third season adapted the plot of the novel.

Dr. Hannibal Lecter is a character created by the American novelist Thomas Harris. Lecter is a serial killer who eats his victims. Before his capture, he was a respected forensic psychiatrist; after his incarceration, he is consulted by FBI agents Will Graham and Clarice Starling to help them find other serial killers.