Family name Zilvytis (Zilvytis 
) , in the world, is a very rare last name. The cognomen Zilvytis is habitual in Lithuania, where it is a rare surname, Canada, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Zilvytis | United Kingdom, Canada, Lithuania |