Cognomen Sylveus (Sylveus 
) , all around the world, is a rare surname. The family name Sylveus is habitual in Haiti, where it is a rare surname, the United States, where it is an extremely rare surname, and Brazil. Very seldom, Sylveus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sylveus | Haiti, Brazil, United States |