Leonidas Sexton (May 19, 1827 – July 4, 1880) was an American lawyer and politician who served one term as a U.S. Representative from Indiana from 1877 to 1879.

He previously served as Lieutenant Governor of Indiana from 1873 to 1877.

Born in Rushville, Indiana, Sexton attended the public schools of his native county and was graduated from Jefferson College (now Washington & Jefferson College), Canonsburg, Pennsylvania, in 1847.

He was interred in East Hill Cemetery, Rushville, Indiana.

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