Ashley Tisdale as Sharpay Evans

Austin Butler as Peyton Leverett

Cameron Goodman as Amber Lee Adams

Bradley Steven Perry as Roger Elliston the Third

Alec Mapa as Gill Samms

Jack Plotnick as Neal Roberts

Robert Curtis Brown as Mr. Evans

Jessica Tuck as Mrs. Evans

Pat Mastroianni as Jerry Taylor

Mike 'Nug' Nahrgang as Stage Manager

Alessandra Cannito as Lupe

Lauren Collins as Tiffany

Shadia Ali as Dena

Sarah Joy Bennett as Kelly

Tracey Ferencz as Marjorie

Tammy Isbell as Judith / Nell

Kyle Buchanan as Tim

Jorge Molina as Mr. Gonzalez

Mya Michaels as Mrs. Gonzalez

Christian Potenza as Sound Engineer

Amish Patel as Butchy

Michelle Bugay as Girl 1

Sarah Slywchuk as Singer Girl

Shawn Byfield as Trevor

Johnie Chase as Card Player

Taylor James as Shine Dancer / Finale Dancer

Damien Lavergne as Dancer

Bethany Kovarik as Dancer

Misha Rasaiah as Dancer

Alexandra Herzog as Dancer

Tanya Karn as Dancer

Shamier Anderson as Lead Dancer

Rhonda Roberts as Dancer

Louise St. Cyr as Dancer

Marc Cardarelli as Dancer

Judy Kovacs as Dancer

Tamina Pollack-Paris as Dancer

Corey Gorewicz as Dancer

Charles Seminerio as Dancer

Michael MacLennan as Dancer

Joey Arrigo as Dancer

Tom Bishop Jr. as Carriage Driver

Moonlyn as Statue of Liberty

David Braid as Pianist (uncredited)

Craig Cyr as Poker Player (uncredited)

Laura Eichhorn as Duchess (voice) (uncredited)

Okiki Kendall as Patron #1 (unredited)

Shawn Molko as Roger Elliston (singing voice) (uncredited)

Justin Nie as Patron #2 (uncredited)

Alana Randall as Company Dancer (uncredited)

Vanessa Volcy as Party Goer (uncredited)

Manly "Little Pickles" Ortega as Boi Evans (uncredited)