Clifton Webb (Frank Bunker Gilbreth)
Jeanne Crain (Ann Gilbreth)
Myrna Loy (Lillian Gilbreth)
Edgar Buchanan (Dr. Burton)
Patti Brady (Martha Gilbreth)
Norman Ollestad (Frank Gilbreth, Jr.)
Robert Arthur
Betty Lynne (Libby Lancaster)
Roddy McCaskill (Jack Gilbreth)
Carol Nugent (Lillie Gilbreth)
Jimmy Hunt (William Gilbreth)
Teddy Driver (Dan Gilbreth)
Betty Barker (Mary Gilbreth)
Evelyn Varden (School Principal)
Frank Orth (Mr. Higgins)
Craig Hill (Tom Black)
Virginia Brissac (Mrs. Benson)
Walter S. Baldwin (Jim Bracken)
Bennie Bartlett (Joe Scales)
Sid Saylor (Plumber)
Ken Christy (Mailman)
Mary Field (Music teacher)
Barbara Bates (Ernestine)
Mildred Natwick (Mrs. Mebane)
Sara Allgood (Mrs. Monahan)
Anthony Sydes (Fred Gilbreth)