 Jack PalanceMilo March | Milo March |
 Anita EkbergTrudie Hall | Trudie Hall |
 Nigel PatrickSam Carter | Sam Carter |
 Anthony NewleyErnesto | Ernesto |
 Bonar ColleanoMartin Lomer | Martin Lomer |
| SSean KellyRizzio | Rizzio |
 Sidney JamesFranklin | Franklin |
 Donald PleasenceOrgan Grinder | Organ Grinder |
 Eric PohlmannTristao | Tristao |
 Josephine BrownMrs. Frazur | Mrs. Frazur |
 Gerard HeinzStone | Stone |
 Alec MangoLopez | Lopez |
 Anne AubreyGirl on Train | Girl on Train |
 Mary Laura WoodMrs. Pritchard | Mrs. Pritchard |
 Angela WhitePamela Pritchard | Pamela Pritchard |
 Alfred BurkeMr. Pritchard | Mr. Pritchard |
 Bill ShineEnglish Husband | English Husband |
 Joan IngramEnglish Wife | English Wife |
 Naomi ChanceJane Leighton | Jane Leighton |
 Mark BakerMullins | Mullins |
| AAlex GallierHotel Manager Lisbon | Hotel Manager Lisbon |
 Walter GotellProfuno | Profuno |
| RRichard GoldingBar Head Waiter | Bar Head Waiter |
| MMaxwell ShawDesk Clerk Lisbon | Desk Clerk Lisbon |
 Raymond AdamsonPolice Inspector (uncredited) | Police Inspector (uncredited) |
| PPaul BeradiBystander at Wrecked Car (uncredited) | Bystander at Wrecked Car (uncredited) |
| EErnest BlythMan in Lisbon Hotel (uncredited) | Man in Lisbon Hotel (uncredited) |
 Jack CunninghamStone's Jailer (uncredited) | Stone's Jailer (uncredited) |
| VVictor HarringtonMan in Madrid Hotel (uncredited) | Man in Madrid Hotel (uncredited) |
| AAnthony JohnChild (uncredited) | Child (uncredited) |
