Main Cast:
* Daniel Radcliffe as Harry Potter: The Boy Who Lived, now facing more challenges and danger than ever before.
* Rupert Grint as Ron Weasley: Harry's loyal best friend, facing internal struggles and adjusting to a new dynamic within the group.
* Emma Watson as Hermione Granger: The brilliant and resourceful witch, facing the growing dangers and the pressures of the wizarding world.
* Michael Gambon as Albus Dumbledore: The Headmaster of Hogwarts, leading the fight against Voldemort, but facing internal conflicts and challenges to his authority.
* Maggie Smith as Minerva McGonagall: The strict but fair Transfiguration teacher, offering guidance and support to Harry.
* Alan Rickman as Severus Snape: The Potions Master, whose true loyalties remain unclear, adding mystery and tension to the story.
* Gary Oldman as Sirius Black: Harry's godfather, trying to protect him and facing threats from the Ministry of Magic.
* Emma Thompson as Sybil Trelawney: The eccentric Divination teacher, with her cryptic pronouncements and surprising importance to the story.
* Imelda Staunton as Dolores Umbridge: The new Defense Against the Dark Arts teacher, a manipulative and cruel antagonist who poses a significant threat to Harry and his friends.
* Brendan Gleeson as Alastor "Mad-Eye" Moody: The Auror, a powerful wizard who brings experience and knowledge of the dark arts to the fight against Voldemort.
* Evanna Lynch as Luna Lovegood: The eccentric and whimsical Ravenclaw student, providing a unique perspective and support for Harry and his friends.
* Robert Pattinson as Cedric Diggory: The popular and skilled Triwizard Tournament champion, who becomes a significant figure in the story.
Other Notable Cast Members:
* Bonnie Wright as Ginny Weasley: Ron's younger sister, developing a connection with Harry and facing her own challenges.
* Matthew Lewis as Neville Longbottom: Harry's fellow Gryffindor, growing in courage and strength as the story progresses.
* Oliver Phelps and James Phelps as Fred and George Weasley: Ron's mischievous twin brothers, causing chaos and finding creative ways to challenge Umbridge's authority.
* Tom Felton as Draco Malfoy: Harry's arch-rival, navigating his own path within the dark forces.
* David Thewlis as Remus Lupin: A former Defense Against the Dark Arts teacher, whose true nature is revealed in this film.
* Julie Walters as Molly Weasley: The Weasley matriarch, offering warmth, support, and fierce protectiveness.
* Mark Williams as Arthur Weasley: Molly's husband and a dedicated Ministry of Magic employee, facing his own challenges.
The Order of the Phoenix:
The film introduces the Order of the Phoenix, a secret organization dedicated to fighting Lord Voldemort. They are composed of many skilled wizards and witches, including:
* Harry Potter
* Albus Dumbledore
* Sirius Black
* Remus Lupin
* Nymphadora Tonks (played by Natalia Tena)
* Kingsley Shacklebolt (played by George Harris)
* Minerva McGonagall
* Arthur Weasley
* Molly Weasley
* Alastor "Mad-Eye" Moody
The film brings a new level of complexity and danger to the Harry Potter universe, expanding the cast and introducing new characters, all while highlighting the importance of resilience, courage, and friendship in the face of great darkness.