Thomas Marshall (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 $3 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.