Leon Janney
- Compleanno:
- 04/01/1917
- Luogo di nascita:
- Ogden, Utah, USA:
 | Mir hat es immer Spaß gemacht (1970) Mr. McCarthy |
 | Charly (1968) Dr. Richard Nemur |
 | The Last Mile (1959) Pat Callahan |
 | Stolen Paradise (1940) Richard 'Dick' Gordon |
 | Police Court (1932) Nathaniel "Junior" Barry Jr. |
 | Penrod and Sam (1931) Penrod Schofield |
 | Their Mad Moment (1931) Narcio |
 | Father's Son (1931) Bill Emory |
 | Die Maske fällt (1931) |
 | The Doorway to Hell (1930) Jackie Lamarr |
 | Old English (1930) Jock |
 | An Intimate Dinner in Celebration of Warner Bros. Silver Jubilee (1930) Self |
 | Bear Shooters (1930) Donald 'Spud' |
 | The Younger Generation (1929) Eddie Lesser as a Boy |
 | The Wind (1928) Cora's Child |
| | The Elephant's Elbows (1928) Johnny Smith |