 Peter UstinovHercule Poirot | Hercule Poirot |
 Jane BirkinLouise Bourget | Louise Bourget |
 Lois ChilesLinnet Ridgeway Doyle | Linnet Ridgeway Doyle |
 Bette DavisMarie Van Schuyler | Marie Van Schuyler |
 Mia FarrowJacqueline de Bellefort | Jacqueline de Bellefort |
 Jon FinchJames Ferguson | James Ferguson |
 Olivia HusseyRosalie Otterbourne | Rosalie Otterbourne |
 I.S. JoharMr. Choudhury | Mr. Choudhury |
 George KennedyAndrew Pennington | Andrew Pennington |
 Angela LansburySalome Otterbourne | Salome Otterbourne |
 Simon MacCorkindaleSimon Doyle | Simon Doyle |
 David NivenColonel Race | Colonel Race |
 Maggie SmithMiss Bowers | Miss Bowers |
 Jack WardenLudwig Bessner | Ludwig Bessner |
 Harry AndrewsBarnstaple | Barnstaple |
 Sam WanamakerRockford | Rockford |
 Celia ImrieMaid (uncredited) | Maid (uncredited) |
 Saeed JaffreyServant (uncredited) | Servant (uncredited) |
 Barbara HicksSchoolteacher (uncredited) | Schoolteacher (uncredited) |
| FFrançois GuillaumeDoublure Lumière (uncredited) | Doublure Lumière (uncredited) |
 Reg LyeWorkman (uncredited) | Workman (uncredited) |
| AAndrew MansonEgyptian (uncredited) | Egyptian (uncredited) |
