Cognomen Saint-Louis-Augustin (Saint-Louis-Augustin 
) , in the world, is a rare last name. The last name Saint-Louis-Augustin is characteristic of Western Europe, particularly France, where it is a rare surname. Parts of the name also exists independently as a first name Saint, a first name Louis, and a first name Augustin.
| VARIANT | COUNTRY |
|---|---|
| Saint-Louis-Augustin | France |
| raymond saint-louis-augustin French politician, FR (b. 1940) |
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