| 角色 | 饰演者 | 角色介绍 |
| Ruth Wonderly | 贝比·丹尼尔斯 | |
| Sam Spade | 里卡多·柯兹 | |
| Casper Gutman | Dudley Digges | |
| Effie Perrine | 尤娜·默克尔 | |
| Police Lt. Dundy | Robert Elliott | |
| Iva Archer | 塞尔玛·托德 | |
| Dr. Joel Cairo | Otto Matieson | |
| Miles Archer | Walter Long | |
| Wilmer Cook | Dwight Frye | |
| Det. Sgt. Tom Polhaus | J. Farrell MacDonald | |
| Capt. John Jacobi (uncredited) | Agostino Borgato | |
| Jailbird seeking cigarette (uncredited) | Tiny Jones | |
| Baggage clerk (uncredited) | Cliff Saum | |
| District Attorney (uncredited) | Morgan Wallace |
