Zac Efron: Troy Bolton

Vanessa Anne Hudgens: Gabriella Montez

Ashley Tisdale: Sharpay Evans

Lucas Grabeel: Ryan Evans

Corbin Bleu: Chad Danforth

Monique Coleman: Taylor McKessie

Olesya Rulin: Kelsi Nielson

Bart Johnson: Coach Jack Bolton

Leslie Wing: Mrs. Bolton

Alyson Reed: Lehrerin Miss. Darbus

Socorro Herrera: Mrs. Montez