High Quality Content by WIKIPEDIA articles! Harry Potter cast members is a list of actors who voiced or portrayed characters appearing in the Harry Potter film series based on the book series by J. K. Rowling. Daniel Radcliffe, Rupert Grint and Emma Watson, who have played and will play Harry Potter, Ron Weasley and Hermione Granger in all the films, were virtually unknown when they were cast. Complementing them on screen are some of the most renowned actors of the United Kingdom and Ireland, including Helena Bonham Carter, Jim Broadbent, Robbie Coltrane, Warwick Davis, Ralph Fiennes, Michael Gambon, Brendan Gleeson, Richard Griffiths, Richard Harris, John Hurt, Jason Isaacs, Gary Oldman, Miranda Richardson, Alan Rickman, Fiona Shaw, Maggie Smith, Timothy Spall, Imelda Staunton, David Thewlis, Emma Thompson, Julie Walters and Mark Williams, among others. Sixteen actors have appeared as the same character in the first six films of the franchise, and many of these actors are expected to reappear in either of the upcoming two parts of Harry Potter and the Deathly Hallows.