Blondie's Secret

Penny Singleton

Blondie Bumstead

Arthur Lake

Dagwood " Dag " Bumstead

Larry Simms

Alexander Bumstead

Marjorie Ann Mutchie

Cookie Bumstead

Jerome Cowan

George M. Radcliffe

Thurston Hall

George Whiteside

Jack Rice

Ollie

Danny Mummert

Alvin Fuddle

Frank Orth

Mr. Philpotts

Alyn Lockwood

Mary

Eddie Acuff

Mailman

Daisy

Daisy

Joi Lansing

Bathing Girl in Dream

Murray Alper

Larry

Greta Granstedt

Mona the Moll

William Phillips

Chips

Grandon Rhodes

Ken Marcy

Joseph Crehan

Police Sergeant (uncredited)

Kernan Cripps

Mack, Policeman with Sergeant (uncredited)

Sam Finn

Buck, Office Worker (uncredited)