William Ward Duffield | |
|---|---|
 | |
| Superintendent of the United States Coast and Geodetic Survey | |
| In office 1894–1897 | |
| Preceded by | Thomas Corwin Mendenhall |
| Succeeded by | Henry Smith Pritchett |
| Personal details | |
| Born | November 19, 1823 Carlisle, Pennsylvania, US |
| Died | June 22, 1907 (aged 83) Washington D.C., US |
| Resting place | Arlington National Cemetery |
| Education | Columbia University |
William Ward Duffield (November 19, 1823 – June 22, 1907) was an executive in the coal industry, a railroad construction engineer, and an officer in the Union Army during the American Civil War. After the war he was appointed Superintendent of the United States Coast and Geodetic Survey.