Family name Louis-Sidne (Louis-Sidne 
) , all around the world, is an extremely rare surname. The cognomen Louis-Sidne is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a first name Louis, and a first name Sidne.
| VARIANT | COUNTRY |
|---|---|
| Louis-Sidne | United States |