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| Año | Título | Personaje | Valoración |
|---|---|---|---|
| 1948 | Women in the Night | Major Eisel | ★★☆☆☆ |
| 1946 | Una noche en Casablanca | Kurt | ★★★☆☆ |
| 1946 | Calcuta | Tea Planter (uncredited) | ★★★☆☆ |
| 1944 | Domicilio desconocido | Bank Clerk (uncredited) | ★★★☆☆ |
| 1943 | Calling Dr. Death | Marion's Father (as Fred Gierman) | ★★★☆☆ |
| 1943 | Hostages | Captain Patzer | ★★★☆☆ |
| 1943 | Cinco tumbas al Cairo | German Sergeant (uncredited) | ★★★☆☆ |
| 1943 | The Adventures of Smilin' Jack | Schlesser, device expert [Chs. 10-11] | ★★★☆☆ |
| 1943 | Acción en el Atlántico Norte | German Submarine Captain (uncredited) | ★★★★☆ |
| 1943 | Bajo sospecha | German Border Guard (Uncredited) | ★★★☆☆ |
| 1943 | Background to Danger | Attaché | ★★★☆☆ |
| 1943 | Al filo de la oscuridad | German Pilot (uncredited) | ★★★☆☆ |
| 1943 | Plan for Destruction | Nazi Radio Announcer | ★★★☆☆ |
| 1943 | The Moon Is Down | Sergeant (uncredited) | ★★★☆☆ |
| 1943 | They Stooge to Conga | U-Boat Commander (uncredited) | ★★★★☆ |
| 1942 | Unseen Enemy | Franz Mueller, as Frederick Gierman | ☆☆☆☆☆ |
| 1942 | The Great Impersonation | Stamin | ★★★☆☆ |
| 1942 | Destination Unknown | Van Hoven | ★★★☆☆ |
| 1942 | Lucky Jordan | Bulky Gardener | ★★★☆☆ |
| 1942 | Hitler, vivo o muerto | Meyer | ★★☆☆☆ |
| 1942 | Hubo una luna de miel | German Getting Film from Le Blanc (uncredited) | ★★★☆☆ |
| 1941 | El Sargento York | German Lieutenant (uncredited) | ★★★★☆ |
| 1941 | Así acaba nuestra noche | Doctor (uncredited) | ★★★☆☆ |
| 1941 | Lucha en la sombra | Radioman | ★★★☆☆ |
| 1941 | The Deadly Game | Carl Nash | ★★★☆☆ |
| 1940 | Calling Philo Vance | Austrian Sergeant (uncredited) | ★★★☆☆ |
| 1940 | Evasión | Porter (uncredited) | ★★★★☆ |
| 1939 | Confesiones de un espía nazi | German-American at Bund Meeting (uncredited) | ★★★☆☆ |
| 1939 | Espionage Agent | German Officer on Train | ★★★☆☆ |
| 1939 | British Intelligence | Otto Kurtz | ★★★☆☆ |
| 1939 | Hitler: Beast of Berlin | Father Pommer | ★★☆☆☆ |
Películas destacadas de Frederick Giermann
Estas son las películas más destacadas en las que ha trabajdo:
