Quasimodo's make-up took five hours. Sir Anthony Hopkins was required to report to the set at 3 a.m.
Sir John Gielgud only had eight lines.
This is the first of two films in which Anthony Hopkins played a role previously played by Charles Laughton. The other was The Bounty (1984) in which Hopkins played Lt. William Bligh. Laughton played Bligh in Mutiny on the Bounty (1935) and Quasimodo in The Hunchback of Notre Dame (1939).
Sir Anthony Hopkins and Sir Derek Jacobi played Adolf Hitler (The Bunker (1981) and Inside the Third Reich (1982)) and Claudius (Hamlet (1969) and Hamlet (1996)).