Andrew Jackson Harlan (March 29, 1815 – May 19, 1907) was a U.S. Representative from Indiana and later a member of the Missouri House of Representatives. He was a cousin of Aaron Harlan. Born near Wilmington, Ohio, Harlan attended the public schools. He studied law, was admitted to the bar in 1839 and commenced practice in Richmond, Indiana. He moved to Marion, Indiana, in 1839. He served as a clerk of the Indiana House of Representatives in 1842 and a member 1846-1848. Harlan was elected as a Democrat to the Thirty-first Congress (March 4, 1849 – March 3, 1851).