Red Dragon is a psychological horror novel by American author Thomas Harris, first published in 1981. The story follows former FBI profiler Will Graham, who comes out of retirement to find and apprehend an enigmatic serial killer nicknamed "the Tooth Fairy". The novel introduces the character Dr. Hannibal Lecter, a brilliant psychiatrist and cannibalistic serial killer whom Graham reluctantly turns to for advice and with whom he has a dark past.

Will Graham is a fictional character and protagonist of Thomas Harris' 1981 novel Red Dragon. Graham is also the protagonist of two film adaptations of the novel, Manhunter (1986) and Red Dragon (2002), and the television series Hannibal (2013–2015), which adapted various parts of the Hannibal Lecter franchise.