| Thomas Marshall | |
| Birth Date: | 13 April 1793 |
| Birth Place: | Mason County, Kentucky |
| Death Place: | Lewis County, Kentucky |
| Placeofburial Label: | Place of Burial |
| Allegiance: | United States of America |
| Branch: | United States Army |
| Serviceyears: | 1846–1848 |
| Rank: | Brigadier general of Volunteers |
| Battles: | Mexican–American War |
| Relations: | Marshall family |
| Laterwork: | Kentucky legislator |
Thomas Frances Marshall [1] (April 13, 1793 – March 28, 1853), was a brigadier general of Volunteers in the United States Army during the Mexican–American War.
A nephew of Chief Justice John Marshall, Thomas Marshall served in the Kentucky legislature several times between 1817 and 1844, one of those terms as Speaker of the House. At the outbreak of the Mexican–American War, he was commissioned by President James K. Polk as a Brigadier General of Volunteers, and commanded the Kentucky brigade under General John E. Wool. After his return to Kentucky, he was murdered by a tenant at his home in Lewis County.