| Birth Name: | James Alexander Dinwiddie |
| Birth Date: | 8 February 1855 |
| Birth Place: | Lynchburg, Virginia, U.S. |
| Death Place: | Moneta, Virginia, U.S. |
| State Senate1: | Virginia |
| District1: | 26th |
| Term Start1: | December 6, 1899 |
| Term End1: | January 13, 1904 |
| Preceded1: | William H. Hale |
| Succeeded1: | Sparrel T. Turner |
| Party: | Republican |
| Spouse: | Virginia Roberts Craghead |
James Alexander Dinwiddie (February 8, 1855 – March 14, 1940) was an American politician who served as a member of the Virginia Senate.[1]