Julie Andrews
Maria

Christopher Plummer
Captain Georg von Trapp

Eleanor Parker
The Baroness

Richard Haydn
Max Detweiler

Peggy Wood
Mother Abbess

Charmian Carr
Liesl von Trapp

Heather Menzies
Louisa von Trapp

Nicholas Hammond
Friedrich von Trapp

Duane Chase
Kurt von Trapp

Angela Cartwright
Brigitta von Trapp

Debbie Turner
Marta von Trapp

Kym Karath
Gretl von Trapp

Anna Lee
Sister Margaretta

Portia Nelson
Sister Berthe

Ben Wright
Herr Zeller

Daniel Truhitte
Rolfe

Norma Varden
Frau Schmidt

Marni Nixon
Sister Sophia

Doris Lloyd
Baroness Ebberfeld

Bert Stevens
Party Guest (uncredited)

Gertrude Astor
Party Guest (uncredited)

Frank Baker
Party Guest (uncredited)

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

Leoda Richards
Party Guest