| Marshall Farnum | |
| Birth Date: | December 19, 1879 |
| Birth Place: | Natick, Massachusetts, United States |
| Death Date: | February 19, 1917 (aged 37) |
| Death Place: | Prescott, Arizona, United States |
| Othername: | "Ding" |
| Occupation: | Actor, Director |
| Yearsactive: | 1913–1917 (film) |
| Family: | William Farnum (brother) Dustin Farnum (brother) |
Marshall Farnum (December 19, 1879 – February 19, 1917)[1] was an American actor and film director. The youngest of the three Farnum boys, Dustin Farnum and William Farnum.[2] Having directed first on stage, from 1913 he established himself as a film director at prominent companies such as Fox Film and World Film. He died of Tuberculosis at the age of thirty seven.