Julie Andrews

(Queen Clarisse Renaldi)

Anne Hathaway

(Mia Thermopolis)

Héctor Elizondo

(Joe)

Heather Matarazzo

(Lilly Moscovitz)

Mandy Moore

(Lana Thomas)

Caroline Goodall

(Mia's Mom, Helen)

Robert Schwartzman

(Michael Moscovitz)

Patrick Flueger

(Student Jeremiah Hart)

Sean O'Bryan

(Teacher Mr. O'Connell)

Sandra Oh

(Vice Principal Gupta)

Kathleen Marshall

(Charlotte Kutaway)