Anne Hathaway (Mia Thermopolis), Julie Andrews (Königin Clarisse Renaldi), Heather Matarazzo (Lilly Moscovitz), Robert Schwartzman (Michael Moscovitz), Hector Elizondo (Joe), Mandy Moore (Lana Thomas), Caroline Goodall (Helen Thermopolis), Sandra Oh (Vizedirektorin Gupta), Erik von Detten (Josh Bryant), Patrick John Flueger (Jeremiah Hart), Sean O'Bryan (Lehrer Patrick O'Connell), Mindy Burbano (Sportlehrerin Ms. Harbula), Tamara Levinson (Cheerleader Lupe), Beth Anne Garrison (Cheerleader Anna), Erik Bragg (Bobby Bad)