Louis St. Martin (May 17, 1820 - February 9, 1893) was a member of the U. S. House of Representatives representing the state of Louisiana. He served two terms as a Democrat, although remarkably these two terms were separated by more than three decades. St. Martin was born in St. Charles Parish and died in New Orleans.
The long hiatus between St. Martin's two terms can be partially explained by the intervening Civil War.
