| Actor | Character | Firearm | Notes |
|---|---|---|---|
| Guy Doleman | Ross | Colt Pocket Positive | - |
| Michael Caine | Harry Palmer | Colt Pocket Positive | - |
| Michael Caine | Harry Palmer | Mauser Pocket Pistol | - |
| Michael Caine | Harry Palmer | Sterling SMG | - |
| Michael Caine | Harry Palmer | Luger P08 | - |
| Sue Lloyd | Jean | Walther PPK | - |