There's expected to be a rush for tickets from kids and adults who are desperate to be among the first fans to see the new film.
It's officially released on 15 November in the UK. And there will be special charity preview screenings on 8, 9 and 10 as well as 14 of November.
The first movie, Harry Potter and the Philosopher's Stone, smashed all box office records. It sold more advance tickets than any other film.