Joseph Carnahan LeSage Jr. (December 12, 1928 - September 22, 2015) was a lawyer and politician in Louisiana. He worked in Shreveport and served in the Louisiana Senate representing Caddo Parish from 1968 until 1972. He was a supervisor of Louisiana State University.
He graduated from Homer High School in 1945. He was a multi-sport athlete. He served during the Korean War.
A Democrat, he was elected to the state senate in 1968. He served one term. Louisiana SCR45 commemorated his passing.
A video of an interview with him for an oral history project of the Shreveport Bar Association is on YouTube.