A continuación presentamos el listado de actores y actrices que participaron en la pelÃcula Harry Potter y la Piedra Filosofal.
- Daniel Radcliffe (Harry Potter)
- Emma Watson (Hermione Granger)
- Rupert Grint (Ronald Weasley)
- Richard Harris (Albus Dumbledore)
- Maggie Smith (Minerva McGonagall)
- Robbie Coltrane (Rubeus Hagrid)
- Tom Felton (Draco Malfoy)
- David Bradley (Argus Filch)
- Alan Rickman (Severus Snape)
- Julie Walters (Molly Weasley)
- Bonnie Wright (Ginny Weasley)
- Chris Rankin (Percy Weasley)
- James Phelps (Fred Weasley)
- Oliver Phelps (George Weasley)
- Jean Southern (Vendedora del Tren)
- Matthew Lewis (Neville Longbottom)
- Saunders Triplets (Bebé Harry Potter)
- Fiona Shaw (Petunia Dursley)
- Harry Melling (Dudley Dursley)
- Richard Griffiths (Vernon Dursley)
- Derek Deadman (Tom)
- Ian Hart (Quirinus Quirrell)
- Ben Borowiecki (Niño del Callejón Diagon)
- Verne Troyer (Griphook)
- John Hurt (Sr. Ollivander)
- Richard Bremmer (El-Que-No-Debe-Ser-Nombrado [voz])
- Geraldine Somerville (Lily Potter)
- Harry Taylor (Guardia de la estación)
- Jamie Waylett (Vincent Crabbe)
- Josh Herdman (Gregory Goyle)
- Devon Murray (Seamus Finnigan)
- Alfie Enoch (Dean Thomas)
- Leslie Phillips (Sombrero Seleccionador [voz])
- Eleanor Columbus (Susan Bones)
- John Cleese (Nick Casi Decapitado)
- Terence Bayler (Barón Sanguinario)
- Simon Fisher-Becker (Fraile Gordo)
- Nina Young (Dama Gris)
- Zoë Wanamaker (Madame Hooch)
- Warwick Davis (Filius Flitwick/Duende de Gringotts)
- Luke Youngblood (Lee Jordan)
- Sean Biggerstaff (Oliver Wood)
- Elizabeth Spriggs (Sra. Gorda)
- Danielle Tabor (Angelina Johnson)
- Leilah Sutherland (Alicia Spinnet)
- Emily Dale (Katie Bell)
- David Holmes (Adrian Pucey)
- Scott Fern (Terrence Higgs)
- Adrian Rawlins (James Potter)
- Ray Fearon (Firenze [voz])