Lewis Tillman (* August 18, 1816 in Shelbyville, Bedford County, Tennessee; † May 3, 1886 ) was an American politician. Between 1869 and 1871 he represented the state of Tennessee in the U.S. House of Representatives.
Lewis Tillman was a nephew of Barclay Martin (1802-1890), who was also 1845-1847 for the State of Tennessee in Congress. He attended the common schools and then completed an academic education. Later he took part in a war against the Seminoles as a soldier. Professionally he worked in agriculture. He was also a 1852-1860 usher at the District Court in Bedford County. Before the Civil War he was a colonel in the state militia of Tennessee. In the meantime he gave in Shelbyville out a newspaper. From 1865 to 1869 he was minister of the chancery court.
Politically, Tillman became a member of the Republican Party. In the congressional elections of 1868 he was in the fourth electoral district of Tennessee in the U.S. House of Representatives in Washington DC chosen, where he became the successor of James Mullins on March 3, 1869. Since he resigned in 1870 to further candidacy, he was able to complete only one term in Congress until March 3, 1871. During this time the 15th Amendment was adopted.
After his retirement from the U.S. House of Representatives Lewis Tillman again worked in agriculture. He died on 3 May 1886 in Shelbyville.