Family name Marc-Sèbastien (Marc-Sèbastien 
) , globally, is an extremely rare surname. Much more frequently, Marc-Sèbastien is the forename as well as the last name. Parts of the name also exists independently as a first name Marc, and a first name Sèbastien.
| VARIANT | COUNTRY |
|---|---|
| Marc-Sèbastien | Democratic Republic of the Congo |