Julie Andrews as Maria

Christopher Plummer as Captain Georg von Trapp

Eleanor Parker as The Baroness

Richard Haydn as Max Detweiler

Peggy Wood as Mother Abbess

Charmian Carr as Liesl von Trapp

Heather Menzies as Louisa von Trapp

Nicholas Hammond as Friedrich von Trapp

Duane Chase as Kurt von Trapp

Angela Cartwright as Brigitta von Trapp

Debbie Turner as Marta von Trapp

Kym Karath as Gretl von Trapp

Anna Lee as Sister Margaretta

Portia Nelson as Sister Berthe

Ben Wright as Herr Zeller

Daniel Truhitte as Rolfe

Norma Varden as Frau Schmidt

Gilchrist Stuart as Franz

Marni Nixon as Sister Sophia

Evadne Baker as Sister Bernice

Doris Lloyd as Baroness Ebberfeld

Ada Beth Lee as Sister Catherine (uncredited)

Doreen Tryden as Sister Agatha (uncredited)

Bert Stevens as Party Guest (uncredited)

Gertrude Astor as Party Guest (uncredited)

Frank Baker as Party Guest (uncredited)

Bill Lee as Captain Georg von Trapp (singing voice) (uncredited)

Margery MacKay as Mother Abbess (singing voice) (uncredited)

Leoda Richards as Party Guest

Sam Harris as Party Guest (uncredited)