 Clifton WebbFrank Gilbreth | Frank Gilbreth |
 Jeanne CrainAnn Gilbreth | Ann Gilbreth |
 Myrna LoyLillian Gilbreth | Lillian Gilbreth |
 Betty LynnDeborah Lancaster | Deborah Lancaster |
 Edgar BuchananDr. Burton | Dr. Burton |
 Barbara BatesErnestine Gilbreth | Ernestine Gilbreth |
 Mildred NatwickMrs. Mebane | Mrs. Mebane |
 Sara AllgoodMrs. Monahan | Mrs. Monahan |
| BBetty BarkerMary Gilbreth (uncredited) | Mary Gilbreth (uncredited) |
 Patti BradyMartha Gilbreth (uncredited) | Martha Gilbreth (uncredited) |
| TTeddy DriverDan Gilbreth (uncredited) | Dan Gilbreth (uncredited) |
 Jimmy HuntWilliam Gilbreth (uncredited) | William Gilbreth (uncredited) |
| RRoddy McCaskillJack Gilbreth (uncredited) | Jack Gilbreth (uncredited) |
 Carol NugentLillie Gilbreth (uncredited) | Lillie Gilbreth (uncredited) |
| NNorman OllestadFrank Gilbreth Jr. (uncredited) | Frank Gilbreth Jr. (uncredited) |
| AAnthony SydesFred Gilbreth (uncredited) | Fred Gilbreth (uncredited) |
 Frank OrthHiggins (uncredited) | Higgins (uncredited) |
 Walter BaldwinJim Bracken (uncredited) | Jim Bracken (uncredited) |
 Benny BartlettJoe Scales (uncredited) | Joe Scales (uncredited) |
| LLovyss BradleyTeacher (uncredited) | Teacher (uncredited) |
 Lyn ThomasGirl on Beach (uncredited) | Girl on Beach (uncredited) |
 Virginia BrissacMrs. Benson (uncredited) | Mrs. Benson (uncredited) |
| MMary FieldMusic Teacher (uncredited) | Music Teacher (uncredited) |
 Eula GuyTeacher (uncredited) | Teacher (uncredited) |
| CCaryl LincolnTeacher (uncredited) | Teacher (uncredited) |
 Jeff Richards(uncredited) | (uncredited) |
