Ashley Tisdale
Sharpay Evans
Austin Butler
Peyton Leverett
Cameron Goodman
Amber Lee Adams
Bradley Steven Perry
Roger Elliston the Third
Jack Plotnick
Neal Roberts
Robert Curtis Brown
Mr. Evans
Pat Mastroianni
Jerry Taylor
Mike 'Nug' Nahrgang
Stage Manager
Tammy Isbell
Judith / Nell
Mya Michaels
Mrs. Gonzalez
Anthony Christian Potenza
Sound Engineer
Sarah Slywchuk
Singer Girl
Taylor James
Shine Dancer / Finale Dancer
Shamier Anderson
Lead Dancer
Tamina Pollack-Paris
Dancer
Tom Bishop Jr.
Carriage Driver
David Braid
Pianist (uncredited)
Craig Cyr
Poker Player (uncredited)
Laura Eichhorn
Duchess (voice) (uncredited)
Okiki Kendall
Patron #1 (unredited)
Shawn Molko
Roger Elliston (singing voice) (uncredited)
Justin Nie
Patron #2 (uncredited)
Alana Randall
Compay Dancer (uncredited)
Vanessa Volcy
Party Goer (uncredited)
Manly "Little Pickles" Ortega
Boi Evans (uncredited)