Thomas Speed (October 25, 1768 – February 20, 1842) was a U.S. Representative from Kentucky and a member of the Kentucky House of Representatives.

Born in Charlotte County, Virginia, Speed was taught by his father Captain James Speed. He moved with his parents to Kentucky in 1782. He was employed in the office of the clerk of the general court. He engaged in mercantile pursuits at Danville and Bardstown in 1790. He also engaged in agricultural pursuits. He served as clerk of the Bullitt and Nelson circuit courts. He served as major of Volunteers in the War of 1812.

Speed was elected as a Democratic-Republican to the Fifteenth Congress (March 4, 1817 – March 3, 1819). He was an unsuccessful candidate for reelection. He resumed agricultural pursuits. He also contributed articles to the National Intelligencer, Washington, D.C.

He served as member of the Kentucky House of Representatives in 1821, 1822, and again in 1840. He was a member of the Whig Party when it was organized.

His brother was John Speed.^[1] He died on his farm, "Cottage Grove", near Bardstown, Kentucky, on February 20, 1842, and was interred there.

• United States Congress. "Thomas Speed (id: S000710)". Biographical Directory of the United States Congress.

 This article incorporates public domain material from the Biographical Directory of the United States Congress