The Harry Potter franchise has almost nothing to do with Christmas though there are a few magical Christmas scenes in it. Those combined with the fact that the many of the movies often came out during the holiday season around Thanksgiving and Christmas and are now rerun on tv during Christmastime make them seem like Christmas movies to me. This is especially true of Harry Potter and the Sorcerer’s Stone which features some of the most prominent Christmas scenes in the films and is still more lighthearted than the darker films later in the series.