Joanne Kathleen Rowling executive producer .

Christopher Columbus Director

John Williams Composer

MAJOR CREW LIST
source  »  HarryPotterRealm.com

Main Written/Film Direction Crew
Director  »  Christopher Columbus
Producer  »  David Heyman
Executive Producer  »  J. K. Rowling
Screenwriter(s)  »  Steve Kloves, J. K. Rowling
Cinematography  »  John Seale
Film Editing  »  Richard Francis-Bruce
Production Design  »  Stuart Craig

Music/Score
Original music  »  John Williams

Casting
Casting Director(s)  »  John Dartigue, Janet Hirshenson, Jane Jenkins
Casting Assistant  »  Amy McKee

Second Unit Director or Assistant Director
First Assistant Director  »  Chris Carreras
First Assistant Director: second unit  »  Josh Robertson
Second Assistant Director  »  Robert Grayson
Second Assistant Director: second unit  »  Dan John
Third Assistant Director  »  Fiona Richards

See the entire list at http://www.harrypotterrealm.com/movie_condensedcrew.html!