| Doris Day | Grace LeBoy Kahn | 
    
    
      | Danny Thomas | Gus Kahn | 
    
    
      | Frank Lovejoy | Walter Donaldson | 
    
    
      | Patrice Wymore | Gloria Knight | 
    
    
      | James Gleason | Fred Townsend | 
    
    
      | Mary Wickes | Anna | 
    
    
      | Julie Oshins | Johnny Martin | 
    
    
      | Jim Backus | Sam Harris | 
    
    
      | Minna Gombell | Mrs. LeBoy | 
    
    
      | Harry Antrim | Mr. LeBoy | 
    
    
      | William Forrest | Florenz Ziegfeld | 
    
    
      | Bunny Lewbel | Irene, at age 6 | 
    
    
      | Robert Lyden | Donald, at age 8 | 
    
    
      | Mimi Gibson | Irene, at age 3 | 
    
    
      | Christopher Olsen | Donald, at age 4 | 
    
    
      | John Alban | Benefit Guest (uncredited) | 
    
    
      | Betty Arlen | Chorine (uncredited) | 
    
    
      | Vince Barnett | Burlesk Comedian (uncredited) | 
    
    
      | Dan Barton | Hollywood Producer (uncredited) | 
    
    
      | Mary Bayless | Benefit Guest (uncredited) | 
    
    
      | Rodney Bell | Harris' Assistant (uncredited) | 
    
    
      | George Boyce | Stage Manager (uncredited) | 
    
    
      | Paul Bradley | Benefit Guest (uncredited) | 
    
    
      | Chet Brandenburg | Stagehand (uncredited) | 
    
    
      | Else Bäck | Mrs. Kahn (uncredited) | 
    
    
      | Frances Canto | Nurse (uncredited) | 
    
    
      | Geraldine Cobb | Secretary (uncredited) | 
    
    
      | Tris Coffin | Nightclub Maitre D' (uncredited) | 
    
    
      | Hans Conried | William Rossiter (uncredited) | 
    
    
      | Paul Cristo | Soldier (uncredited) | 
    
    
      | Wade Crosby | The Bartender (uncredited) | 
    
    
      | Dan Dowling | Nightclub Patron (uncredited) | 
    
    
      | Tom Ferrandini | Benefit Guest (uncredited) | 
    
    
      | Charles Fogel | Benefit Guest (uncredited) | 
    
    
      | Rudy Germane | Soldier (uncredited) | 
    
    
      | Kenneth Gibson | Benefit Guest (uncredited) | 
    
    
      | James Gonzalez | Party Guest (uncredited) | 
    
    
      | Herschel Graham | Party Guest (uncredited) | 
    
    
      | Marion Gray | Racetrack Patron (uncredited) | 
    
    
      | Robert Haines | Waiter (uncredited) | 
    
    
      | Ray Heindorf | Orchestra Leader at Kahn Benefit (uncredited) | 
    
    
      | Marcoreta Hellman | Secretary (uncredited) | 
    
    
      | Kathleen Hughes | Nurse (uncredited) | 
    
    
      | Pete Kellett | Soldier (uncredited) | 
    
    
      | Ray Kellogg | John McCormack (uncredited) | 
    
    
      | Clarence M. Landry | Dancer (uncredited) | 
    
    
      | Trudy Marshall | Frankie Mason (uncredited) | 
    
    
      | Sydney Mason | Doctor (uncredited) | 
    
    
      | Frank McLure | Benefit Guest (uncredited) | 
    
    
      | Harold Miller | Benefit Guest (uncredited) | 
    
    
      | Ewing Mitchell | Doctor (uncredited) | 
    
    
      | Hans Moebus | Benefit Guest (uncredited) | 
    
    
      | Jack Mower | Benefit Guest (uncredited) | 
    
    
      | Violet Murray | Chorine (uncredited) | 
    
    
      | George N. Neise | Isham Jones (uncredited) | 
    
    
      | William J. O'Brien | Waiter (uncredited) | 
    
    
      | Monty O'Grady | Bar Patron (uncredited) | 
    
    
      | Peter Ortiz | Soldier (uncredited) | 
    
    
      | Paul Panzer | Man in Sing-a-Long Audience (uncredited) | 
    
    
      | Dorothy Patrick | Chorine (uncredited) | 
    
    
      | Norman Phillips Jr. | Young Song Writer / Pianist (uncredited) | 
    
    
      | Lonnie Pierce | Chorine (uncredited) | 
    
    
      | Joe Ploski | Man in Sing-a-Long Audience (uncredited) | 
    
    
      | Suzanne Ridgway | Chorine in Wings (uncredited) | 
    
    
      | Rod Rogers | Assistant Manager (uncredited) | 
    
    
      | Clark Ross | Benefit Guest (uncredited) | 
    
    
      | Dick Simmons | Egbert 'Bert' Van Alstyne (uncredited) | 
    
    
      | Ted Stanhope | Waiter (uncredited) | 
    
    
      | Arthur Tovey | Man in Sing-a-Long Audience (uncredited) | 
    
    
      | Glen Turnbull | Stage Manager (uncredited) | 
    
    
      | Joan Vohs | Chorine (uncredited) | 
    
    
      | Martin Wilkins | Stage Manager (uncredited) | 
    
    
      | Bonnie Lou Williams | Gloria Knight (singing voice) (uncredited) | 
    
    
      | Jack Williams | Dancer (uncredited) | 
    
    
      | Tom Wilson | Man in Sing-along Audience (uncredited) |