| Charles X. Seward | |
| Birth Date: | 11 January 1856 |
| Office: | Member of the South Dakota House of Representatives |
| Term Start: | 1891 |
| Term End: | 1892 |
| Term Start1: | 1901 |
| Term End1: | 1902 |
| Office2: | Speaker of the South Dakota House of Representatives |
| Term Start2: | 1891 |
| Term End2: | 1892[1] |
| Preceded2: | Sutton E. Young |
| Succeeded2: | James Marshall Lawson |
| Office3: | Member of the South Dakota Senate |
| Term Start3: | 1909 |
| Term End3: | 1910 |
| Party: | Republican |
Charles X. Seward (January 11, 1856 – October 12, 1912) was an American politician. He served as a Republican member of the South Dakota House of Representatives and the South Dakota Senate.[2]