Biografía no disponible
| Año | Título | Personaje | Valoración |
|---|---|---|---|
| 1980 | Pleasure Palace | English Husband | ★★★☆☆ |
| 1963 | Petticoat Junction | 2nd Stockholder | ★★★☆☆ |
| 1949 | The Red Menace | Jack Tyler (as William J. Lally) | ★★☆☆☆ |
| 1943 | Good Luck, Mr. Yates | Cop | ★★★☆☆ |
| 1942 | Alias Boston Blackie | Policeman (uncredited) | ★★★☆☆ |
| 1942 | Sabotage Squad | Unspecified Policeman | ★★★☆☆ |
| 1942 | Fingers at the Window | Police Sergeant (uncredited) | ★★★☆☆ |
| 1942 | La última prueba | Mack - Detective (uncredited) | ★★★☆☆ |
| 1942 | The Man Who Returned to Life | ★★★☆☆ | |
| 1941 | Mi marido está loco | Sanitarium Guard (uncredited) | ★★★★☆ |
| 1940 | The Lone Wolf Strikes | Bill | ★★★☆☆ |
| 1940 | The Shadow | Policeman | ★★★☆☆ |
| 1940 | El doctor se casa | Deck Steward | ★★★☆☆ |
| 1940 | Sky Murder | Second Man in Monrose's Office | ★★★☆☆ |
| 1940 | Phantom Raiders | Port Inspector | ★★★☆☆ |
| 1940 | Ángeles sobre Broadway | Stage Doorman (uncredited) | ★★★☆☆ |
| 1940 | Cafe Hostess | Cop | ★★★☆☆ |
| 1940 | Infierno de mujeres | Prison Guard | ★★☆☆☆ |
| 1940 | Glamour for Sale | Policeman (uncredited) | ★★☆☆☆ |
| 1940 | We Who Are Young | Policeman (uncredited) | ★★★☆☆ |
| 1940 | Men Without Souls | Guard (uncredited) | ★★★☆☆ |
| 1939 | Dick Tracy's G-Men | Thug in Ghost Town | ★★☆☆☆ |
| 1939 | La horca fatal | Bailiff (uncredited) | ★★★☆☆ |
| 1939 | Sergeant Madden | Older Policeman | ★★★☆☆ |
| 1939 | Dancing Co-Ed | Policeman | ★★★☆☆ |
| 1939 | Nick Carter, Master Detective | Exit Guard | ★★★☆☆ |
| 1938 | Start Cheering | Photographer | ★★★★☆ |
| 1938 | Vive como quieras | Reporter (uncredited) | ★★★★☆ |
| 1938 | Gang Bullets | Court Clerk (uncredited) | ★★★☆☆ |
| 1937 | I'll Take Romance | Steward | ★★★☆☆ |
| 1937 | The Super Snooper | ☆☆☆☆☆ | |
| 1935 | Búsquenme una novia | Bill - New York Cop (uncredited) | ★★★★☆ |
Películas destacadas de William Lally
Estas son las películas más destacadas en las que ha trabajdo:
