Richard Bremmer (the face and voice of Lord Voldemort) is credited as "He Who Must Not Be Named", Lord Voldemort's title.
In the final credits, the word "baron" is mispelled as "barron".
Ian Hart is credited twice: as Quirrell and then at the end of the cast credits as Voldemort.
In all seven films, the P in the Potter surname in the film title is in the form of a lightning bolt, which represents Harry's scar, and is accompanied by thunder and lightning.
David Collier is listed as production assistant twice.
Thanks to Duke of Northumberland, Alnwick Castle.