Louis Alfred Wiltz (January 21, 1843 – October 16, 1881) was an American politician from the state of Louisiana.

With the outbreak of the American Civil War, Wiltz joined the Confederate States Army as a private but quickly rose to the rank of captain.

In 1863, Wiltz married Micael Bienvenu of St. Martinville, the seat of St. Martin Parish.

[5] With the implementation of the new Louisiana state constitution of 1879, the gubernatorial term of Francis T. Nicholls was cut short by one year.

An election was held in 1879, and Louis Wiltz easily defeated his Republican opponent.