William Ludlow was an officer in the Corps of Engineers and a major general in the United States Army who served in the Civil War, Plains Indian Wars, the Spanish–American War, and led a scientific expedition examining the natural wonders of Yellowstone National Park.
- Occupation
- explorer, military personnel
- Citizenship
- United States
- Born
- November 27, 1843
- Died
- August 30, 1901
