Zac Efron

as Troy Bolton

Vanessa Hudgens

as Gabriella Montez

Ashley Tisdale

as Sharpay Evans

Lucas Grabeel

as Ryan Evans

Corbin Bleu

as Chad Danforth

Olesya Rulin

as Kelsi Nielsen

Chris Warren

as Zeke Baylor

Monique Coleman

as Taylor McKessie

Ryne Sanborn

as Jason Cross

Kaycee Stroh

as Martha Cox

Mark L. Taylor

as Thomas Fulton

Robert Curtis Brown

as Vance Evans

Jessica Tuck

as Darby Evans

Bart Johnson

as Coach Jack Bolton

Alyson Reed

as Ms. Darbus

Tanya Chisholm

as Jackie

Miley Cyrus

as Girl at Pool

Kelli Baker

as Lea

McCall Clark

as Emma

Manly "Little Pickles" Ortega

as Boi Evans

Leslie Wing

as Lucille Bolton

Jaymz Tuaileva

as Javier / Principal Dancer

Annette Wright

as Mrs. Hoffenfeffer

K. Danor Gerald

as Player

Charan Prabhakar

as Assistant Pro

David Nibley

as Man #2

Dave Fox

as Coach Reynolds

Charles Hajek

as Valet

Charles Klapow

as Principal Dancer

Shawn Carter

as Principal Dancer

Mollee Gray

as Principal Dancer

Shane Harper

as Principal Dancer

Bayli Baker

as Principal Dancer

David Huff

as Principal Dancer

Kimberly Klapow

as Principal Dancer

Roger Malaga

as Principal Dancer

Jared Murillo

as Principal Dancer

Doug Penikas

as Principal Dancer

Tyne Stecklein

as Principal Dancer

Britt Stewart

as Principal Dancer

Andrew Winston

as Principal Dancer

Sarah K. Aezer

as East High Dancer

Christian Denice

as East High Dancer

Craig De Rosa

as East High Dancer

Raquel Goodsell

as East High Dancer

Allison Holker

as East High Dancer

Thayne Jasperson

as East High Dancer

Michelle Parker

as East High Dancer

Safari Natalia Sorenson

as East High Dancer

Hefa Leone Tuita

as East High Dancer

Lisa Whittaker

as East High Dancer

Danny Axley

as Baseball Dancer

Abe Leon Fullmer

as East High Dancer

Italo Elgueta

as Baseball Dancer

Nick Lanzisera

as Baseball Dancer

Gevorg Manoukian

as Baseball Dancer

Ryan Novak

as Baseball Dancer

Alan Salazar

as Baseball Dancer

Brittany Hipp

as Synchronized Swimmer

Amanda Godinez

as Synchronized Swimmer

Catherine Smith

as Synchronized Swimmer

Quinn Linde

as Baseball Player

Adam Gunn

as Baseball Player

Derek Bundy

as Baseball Player

Scott Hoopes

as Baseball Player

Berkeley Ward

as Baseball Player

Dakota Larsen

as Baseball Player

Johnny Ahn

as Dancer (uncredited)

Joseph Paul Branca

as Dancer (uncredited)

Chevy Lamont Cofield

as Party Dancer (uncredited)

Amanda Garrett

as Dancer (uncredited)

Mike Handy

as Basketball Booster (uncredited)

Michael McQuain

as Wealthy College Booster (uncredited)

Brandon O'Neal

as Dancer (uncredited)

Joseph Winter

as Bass Guitar Player (uncredited)