Some of the Actord have pics. Click on the name of the linked ones to see there pics.

Sean Biggerstaff - Oliver Wood
David Bradley - Argus Filch
Richard Bremmer - Lord Voldemort
John Cleese - Nearly-Headless Nick
Robbie Coltrane - Rubeus Hagrid
Warwick Davis - Professor Flitwick
Mike Edmonds - Gringotts Goblin
Alfie Enoch - Dean Thomas
Tom Felton - Draco Malfoy
Rusty Goffe - Gringotts Goblin
Richard Griffiths - Vernon Dursley
Rupert Grint - Ron Weasley
Richard Harris - Albus Dumbledore
Ian Hart - Professor Quirrell
Joshua Herdman - Gregory Goyle
John Hurt - Mr. Ollivander
Matthew Lewis - Neville Longbottom
Rik Mayall - Peeves the Poltergeist
Harry Melling - Dudley Dursley
Devon Murray - Seamus
Katharine Nicholson - Pansy Parkinson
James Phelps - a Weasley twin
Oliver Phelps - a Weasley twin
Leslie Phillips - The Sorting Hat
Daniel Radcliffe - Harry Potter
Chris Rankin - Percy Weasley
Alan Rickman - Severus Snape
Fiona Shaw - Petunia Dursley
Dame Maggie Smith - Prof. McGonagall
Elizabeth Spriggs - The Fat Lady
Verne Troyer - Griphook
Julie Walters - Mrs. Weasley
Zoe Wannamaker - Madame Hooch
Emma Watson - Hermione Granger
James Waylett - Vincent Crabbe
Bonnie Wright - Ginny Weasley