Anne Hathaway as Mia Thermopolis

Julie Andrews as Queen Clarisse Renaldi

Heather Matarazzo as Lilly Moscovitz

Caroline Goodall as Helen Thermopolis

Héctor Elizondo as Joe

Robert Schwartzman as Michael Moscovitz

Erik von Detten as Josh Bryant

Patrick John Flueger as Jeremiah Hart

Sandra Oh as Vice Principal Gupta

Mandy Moore as Lana Thomas

Sean O'Bryan as Patrick O'Connell

Kathleen Marshall as Charlotte Kutaway

Kimleigh Smith as Ms. Wells

Mindy Burbano as Ms. Harbula

Elizabeth Gudenrath as Anna

Bianca Lopez as Fontana

Tamara Levinson as Lupe

Lenore Thomas as Melissa

Erik Bragg as Bobby Bad

Meredith Shevory as Meredith

Anita Marie Curran as Anita

Cassie Rowell as Alice

Todd Lowe as Eric

Joe Unitas as Coach Joe Ewe

Joel McCrary as Prime Minister Motaz

Clare Sera as Maria Motaz

Greg Lewis as Siegfried von Troken

Bonnie Aarons as Joy von Troken

Darwood Chung as Emperor Sakamoto

Julie Paris as Princess Palisades

Jeff Michalski as Scottish Duke

Erin O'Reilly as Scottish Duchess

Steve Restivo as Count Vitello

Brigitta Lauren as Lady Lindenlaub

Jane Morris as Lady Evergreen

Gary Combs as Lord Fricker

Marvin Braverman as State Dinner Waiter

Allan Kent as State Dinner Waiter

Robert Glaudini as Adolpho

Bill Ferrell as Darrell

Joe Ross as Consulate Maitre D'

Charles Guardino as Mel

Sparrow Heatley as Gretchen

Gwenda Perez as Helga

Barbara Marshall as Lady Jerome

Sam Denoff as Lord Jerome

Tracy Reiner as Spencer

Daru Kawalkowski as Countess Puck

Diane Frazen as Ball Guest Diane

Stanley Frazen as Stanley

Barbara Nabozny as Barbara

Ira Glick as Dr. Glunk

Sol Rosenthal as Lawyer Ball Guest

Hope Alexander-Willis as Lady Caroline

Joe Allen Price as Father Joseph

Willie Brown as Himself

Patrick Richwood as Mr. Robutusen

Terry Brown as Arthur Washington

James Brown Orleans as Dr. Motors

Rob Zylowski as Pizza Delivery Man

Karl Makinen as Schiavone

Sunny Hawks as Vivian

Kathy Garver as Cable Tourist

Erika Young as Umbrella Lady

Ethan Sandler as Tour Bus Driver

Shan Elliot as Michael's Bandmate

Trey Carter as Michael's Bandmate

Bud Markowitz as Pear Juggler

Mark Thompson as DJ Mark

Brian Phelps as DJ Brian

Lily Marshall-Fricker as Kid Autograph Seeker

Sandra Taylor as Suki Sanchez

Tom Hines as Nelson Davenport

Nicholle Tom as Cassie

Patrick Noonan as Suki's Cameraman

Ali Gage as Beach Reporter Ali

John Moran as Beach Photographer

Tanya DiFrancesco as Beach Reporter

Shannon Wilcox as Ball Reporter

Tonje Larsgard as Ball Reporter

Rueben Grundy as Street Reporter

Gwen Holloway as Street Reporter

Lori Sigrist as Twin Reporter

Terri Sigrist as Twin Reporter

Andy Arness as Teacher (uncredited)

René Auberjonois as Philippe Renaldi (uncredited)

Ned Brower as Michael's Bandmate (uncredited)

Jodi Essex as Model (uncredited)

Larry Miller as Paolo (uncredited)

Barry Ratcliffe as Cop #2 (uncredited)

Craig Richards as Student's Father (uncredited)

Terry Wayne as Clark (uncredited)

Charlotte Marshall-Fricker as Kid Autograph Seeker