| Dorothy Yost | |
| Birth Date: | 25 April 1899 |
| Birth Place: | St. Louis, Missouri |
| Death Place: | Monrovia, California |
| Occupation: | Screenwriter |
| Yearsactive: | 1920 - 1954 |
Dorothy Yost (April 25, 1899 - June 10, 1967), later married as Dorothy Yost Cummings, was a prominent screenwriter whose career lasted from the silent era well into the sound era. Over her lifetime, she worked on more than 90 films, including her own screenplays. She was born in St. Louis, Missouri, and died in Monrovia, California.