 Cary GrantC.K. Dexter Haven | C.K. Dexter Haven |
 Katharine HepburnTracy Lord | Tracy Lord |
 James StewartMacaulay 'Mike' Connor | Macaulay 'Mike' Connor |
 Ruth HusseyElizabeth 'Liz' Imbrie | Elizabeth 'Liz' Imbrie |
 John HowardGeorge Kittredge | George Kittredge |
 Roland YoungUncle Willie | Uncle Willie |
 John HallidaySeth Lord | Seth Lord |
 Mary NashMargaret Lord | Margaret Lord |
 Virginia WeidlerDinah Lord | Dinah Lord |
 Henry DaniellSidney Kidd | Sidney Kidd |
| LLionel PapeEdward | Edward |
 Rex EvansThomas | Thomas |
 King BaggotWedding Guest (uncredited) | Wedding Guest (uncredited) |
 Hillary BrookeMain Line Society Woman (uncredited) | Main Line Society Woman (uncredited) |
| VVeda BucklandElsie (uncredited) | Elsie (uncredited) |
 Lita ChevretManicurist (uncredited) | Manicurist (uncredited) |
| RRuss ClarkJohn the Chauffeur (uncredited) | John the Chauffeur (uncredited) |
 David ClydeMac (uncredited) | Mac (uncredited) |
| RRobert De BruceDr. Parsons (uncredited) | Dr. Parsons (uncredited) |
 Dorothy FayMain Line Society Woman (uncredited) | Main Line Society Woman (uncredited) |
 Claude KingUncle Willie's Butler (uncredited) | Uncle Willie's Butler (uncredited) |
 Eric MayneWedding Guest (uncredited) | Wedding Guest (uncredited) |
 Florine McKinneyMain Line Society Woman (uncredited) | Main Line Society Woman (uncredited) |
 Lee PhelpsBartender (uncredited) | Bartender (uncredited) |
| HHilda PlowrightLibrarian (uncredited) | Librarian (uncredited) |
 Helene ReynoldsMain Line Society Woman (uncredited) | Main Line Society Woman (uncredited) |
 Mildred ShayMain Line Society Woman (uncredited) | Main Line Society Woman (uncredited) |
 Joseph SweeneyButler (uncredited) | Butler (uncredited) |
| SSally CleavesParty Guest (uncredited) | Party Guest (uncredited) |
| OOliver CrossWedding Guest (uncredited) | Wedding Guest (uncredited) |
