Clark Stanley | |
|---|---|
 Stanley as depicted on the cover of his book The Life and Adventures of the American Cow-Boy. Life in the Far West by Clark Stanley, Better Known as the Rattle-Snake King | |
| Born | c. 1854 |
| Known for | Source of the term "snake oil salesman" |
Clark Stanley (b. c. 1854 in Abilene, Texas, according to himself; the town was founded in 1881) was an American herbalist and quack doctor who marketed a "snake oil" as a patent medicine, styling himself the "Rattlesnake King" until his fraudulent products were exposed in 1916, popularizing the pejorative title of the "snake oil salesman".