 | Audrey Hepburn als Susy Hendrix |
 | Alan Arkin als Roat / Roat Jr. / Roat Sr. |
 | Richard Crenna als Mike Talman |
 | Efrem Zimbalist Jr. als Sam Hendrix |
 | Jack Weston als Carlino |
 | Samantha Jones als Lisa |
 | Julie Herrod als Gloria |
 | Robby Benson als Boy Tossing Ball (uncredited) |
 | Mel Ferrer als French-Canadian Radio Speaker (voice) (uncredited) |
 | Gary Morgan als Teenage Boy on Street (uncredited) |
 | Bill Walters als BG with Dog (uncredited) |
 | Jean Del Val als The Old Man (uncredited) |
| Frank O'Brien als Shatner (uncredited) |
| Packy McFarland als Passerbye (uncredited) |
| Frederick Knott | Theatre Play |
| Terence Young | Director |
| Robert Carrington | Screenplay |
| Mel Ferrer | Producer |
| Charles Lang | Director of Photography |
| Gene Milford | Editor |
| Henry Mancini | Original Music Composer |
| Jane-Howard Hammerstein | Screenplay |
| Gordon Bau | Makeup Artist |
| Crayton Smith | Script |
| Jean Burt Reilly | Hairstylist |
| Jack Aldworth | Assistant Director |
| Ward Preston | Set Designer |
| George James Hopkins | Set Decoration |
| Russell Llewellyn | Unit Manager |
| Craig Binkley | Set Dressing Artist |
| Leo Shuken | Orchestrator |
| Doris DeHerdt | Script Supervisor |
| George Jenkins | Art Direction |
| Fred Coe | Other |
| Everett A. Hughes | Sound Designer |
| Frederick Knott | Writer |
| Glenn R. Wilder | Stunt Double |
| Wayne Fitzgerald | Title Designer |
