| Actor | Character | Firearm | Notes |
|---|---|---|---|
| Tom Cruise | Col. Claus von Stauffenberg | Walther PPK | - |
| Christian Berkel | OberstAlbrecht von Mertz | Walther PPK | - |
| Kenneth Branagh | Major-General Henning von Tresckow | Gewehrpanzergranate 30 | - |
| Matthias Schweighöfer | Lieutenant Herber | Walther PPK | - |
| Terence Stamp | General Ludwig Beck | Walther PPK | With blued finish and brown Bakelite plastic grips |
| Thomas Kretschmann | Maj. Otto Ernst Remer | Walther PPK | - |
| Tom Hollander | Col. Heinz Brandt | Walther PPK | - |
| Tom Wilkinson | General Friedrich Fromm | Walther PPK | - |