Cognomen Sylvern (Sylvern 
) , in the world, is a very rare last name. The cognomen Sylvern is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Likewise, Sylvern is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sylvern | United States |
|
henry sylvern American radio personality, US (b. 1908) |
|