 Clark GablePhilip Sutherland | Philip Sutherland |
 Gene TierneyMarya Lamarkina | Marya Lamarkina |
 Richard HaydnChristopher Wellington St. John Denny | Christopher Wellington St. John Denny |
 Bernard MilesJoe Brooks | Joe Brooks |
| AAnna ValentinaSvetlana Mikhailovna | Svetlana Mikhailovna |
 Kenneth MoreSteve Quillan | Steve Quillan |
 BelitaValentina Alexandrovna | Valentina Alexandrovna |
 Karl StepanekCommissar | Commissar |
 Theodore BikelLieutenant | Lieutenant |
 Frederick ValkKuragin | Kuragin |
 Peter IllingN.K.V.D. Man | N.K.V.D. Man |
 Robert HendersonU.S. Ambassador | U.S. Ambassador |
 Stanley MaxtedJohn Barnes | John Barnes |
| MMeinhart MaurLemkov | Lemkov |
| AAlexis ChesnakovGeneral Zhdanov | General Zhdanov |
 Anton DiffringHotel Desk Clerk (uncredited) | Hotel Desk Clerk (uncredited) |
 Martin BensonToasting Russian Officer (uncredited) | Toasting Russian Officer (uncredited) |
| AAnton DolinMarya's Partner (uncredited) | Marya's Partner (uncredited) |
 Richard MarnerToasting Russian Officer (uncredited) | Toasting Russian Officer (uncredited) |
 Arthur MullardRussian Policeman (uncredited) | Russian Policeman (uncredited) |
 Jim BradyGuard at Bolshoi Theatre (uncredited) | Guard at Bolshoi Theatre (uncredited) |
 Christopher RhodesPlainclothes Police Officer at Airport (uncredited) | Plainclothes Police Officer at Airport (uncredited) |
