Robert Preston

Character: Harold Hill

Shirley Jones

Character: Marian Paroo

Buddy Hackett

Character: Marcellus Washburn

Ron Howard

Character: Winthrop Paroo

Hermione Gingold

Character: Eulalie Mackechnie Shinn

Paul Ford

Character: Mayor George Shinn

Pert Kelton

Character: Mrs. Paroo

Timmy Everett

Character: Tommy Djilas

Susan Luckey

Character: Zaneeta Shinn

Peggy Mondo

Character: Ethel

Harry Hickox

Character: Charlie Cowell

Jesslyn Fax

Character: Avis Grubb

Mary Wickes

Character: Mrs. Squires

Monique Vermont

Character: Amaryllis

Charles Lane

Character: Constable

William Fawcett

Character: Lester Lonnergan

Barbara Pepper

Character: Mrs. Hawkes

Max Showalter

Character: Salesman On Train (uncredited)

Hank Worden

Character: Undertaker

Sarah Seegar

Character: Townswoman

Milton Parsons

Character: Farmer

Larri Thomas

Character: High School Girl

Colin Kenny

Character: Brighton Townsman (uncredited)

Ronnie Dapo

Character: Norbert Smith

Al Bain

Character: Townsman (uncredited)

Ralph Hart

Character: Young Boy Dancer

Delos Jewkes

Character: Harley MacCauley

Charles Alvin Bell

Character: Police Officer

Natalie Masters

Character: Farmer's Wife (uncredited)

Percy Helton

Character: Train Conductor (uncredited)

Jack Gordon

Character: Townsman (uncredited)

Russell Custer

Character: Townsman (uncredited)