Robert Preston
Harold Hill
Shirley Jones
Marian Paroo
Buddy Hackett
Marcellus Washburn
Ron Howard
Winthrop Paroo
Hermione Gingold
Eulalie Mackechnie Shinn
Paul Ford
Mayor George Shinn
Pert Kelton
Mrs. Paroo
Timmy Everett
Tommy Djilas
Susan Luckey
Zaneeta Shinn
Peggy Mondo
Ethel
Harry Hickox
Charlie Cowell
Jesslyn Fax
Avis Grubb
Mary Wickes
Mrs. Squires
Monique Vermont
Amaryllis
Charles Lane
Constable
William Fawcett
Lester Lonnergan
Barbara Pepper
Mrs. Hawkes
Max Showalter
Salesman On Train (uncredited)
Hank Worden
Undertaker
Sarah Seegar
Townswoman
Milton Parsons
Farmer
Larri Thomas
High School Girl
Colin Kenny
Brighton Townsman (uncredited)
Ronnie Dapo
Norbert Smith
Al Bain
Townsman (uncredited)
Ralph Hart
Young Boy Dancer
Delos Jewkes
Harley MacCauley
Charles Alvin Bell
Police Officer
Natalie Masters
Farmer's Wife (uncredited)
Percy Helton
Train Conductor (uncredited)
Jack Gordon
Townsman (uncredited)
Russell Custer
Townsman (uncredited)