| Marmaduke Smith | |
| Fullname: | Marmaduke Dudley Smith |
| Birth Date: | 28 October 1868 |
| Birth Place: | Montgomery County, Pennsylvania, United States |
| Death Date: | 17 March 1935 (aged 66) |
| Death Place: | Mahoning Township, Pennsylvania, United States.[1] |
| Usopenresult: | SF (1891) |
Marmaduke Smith (1868-1935) was an American tennis player active in the late 19th century.
Smith reached the semifinals of the U.S. National Championships in 1891 (beating Joseph Clark before losing to Fred Hovey).[2]