Michael Gambon who was known for his portrayal of Hogwarts headmaster Albus Dumbledore, died peacefully in the hospital following a bout of pneumonia. He was 82.
Alan Rickman who played the character of Severus Snape died in 2016 due to pancreatic cancer. He died at the age of 69.
Robbie Coltrane best known for his role as Rubeus Hagrid in all eight Harry Potter films, died in October 2022. He was 72.
Richard Griffiths who played Harry Potter's cruel uncle Vernon Dursley, died in 2013 following complications after heart surgery in England. He was 65.
Richard Harris who played Albus Dumbledore in first two Harry Potter movies died at the age of 72 after his battle with Hodgkin's Disease.
Known for her portrayal of Narcissa Malfoy, wife of Lucius Malfoy and mother of Draco — Helen McCrory died of cancer at her home in London in April of 2021. She was 52.
Although he did not voice the character, Verne Troyer portrayed Griphook in Harry Potter and the Philosopher's Stone. He died by suicide in 2018. He was 49.
Robert Hardy died at 91 in 2017. Hardy played Minister of Magic Cornelius Fudge in four Harry Potter films.
Prior to Harry Potter and the Half-Blood Prince hitting theaters, 18-year-old Robert Knox was stabbed to death outside of a London bar in 2008. He played Marcus Belby in Half-Blood Prince.