Which composer wrote the music for the first three Harry Potter films?

John Williams wrote the music for the first three Harry Potter films.

Williams composed the scores for Harry Potter and the Philosopher’s Stone, Harry Potter and the Chamber of Secrets, and Harry Potter and the Prisoner of Azkaban. His work established the musical sound of the film series, including the famous recurring theme commonly known as “Hedwig’s Theme.”

The first film’s score was nominated for an Academy Award for Best Original Score. Williams also returned to provide musical material for later films, although the main scoring duties after the third movie passed to other composers.

Patrick Doyle scored Harry Potter and the Goblet of Fire, while Nicholas Hooper scored the next two films. Alexandre Desplat composed the scores for the final two parts. Thus, Williams is the correct answer for the first three films, not for the entire eight-film series.