Family name Louis-Augustin (Louis-Augustin 
) , in the entire world, is an extremely rare cognomen. The surname Louis-Augustin is habitual in France, where it is an extremely rare surname, and the United States. More prevalently, Louis-Augustin is the forename as well as the last name. Parts of the name also exists independently as a first name Louis, and a first name Augustin.
| VARIANT | COUNTRY |
|---|---|
| Louis-Augustin | France, United States |