Clifton Webb as Frank Gilbreth

Jeanne Crain as Ann Gilbreth

Myrna Loy as Lillian Gilbreth

Betty Lynn as Deborah Lancaster

Edgar Buchanan as Dr. Burton

Barbara Bates as Ernestine Gilbreth

Mildred Natwick as Mrs. Mebane

Sara Allgood as Mrs. Monahan

Betty Barker as Mary Gilbreth (uncredited)

Patti Brady as Martha Gilbreth (uncredited)

Teddy Driver as Dan Gilbreth (uncredited)

Jimmy Hunt as William Gilbreth (uncredited)

Roddy McCaskill as Jack Gilbreth (uncredited)

Carol Nugent as Lillie Gilbreth (uncredited)

Norman Ollestad as Frank Gilbreth Jr. (uncredited)

Anthony Sydes as Fred Gilbreth (uncredited)

Frank Orth as Higgins (uncredited)

Walter Baldwin as Jim Bracken (uncredited)

Benny Bartlett as Joe Scales (uncredited)

Lovyss Bradley as Teacher (uncredited)

Lyn Thomas as Girl on Beach (uncredited)

Virginia Brissac as Mrs. Benson (uncredited)

Mary Field as Music Teacher (uncredited)

Eula Guy as Teacher (uncredited)

Caryl Lincoln as Teacher (uncredited)

Jeff Richards as Bit Role (uncredited)