Surname Sermontis (Sermontis 
) , in the entire world, is a very rare cognomen. The family name Sermontis is characteristic of Northern Europe, particularly Lithuania, where it is quite a rare surname, Norway, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sermontis | Norway, Lithuania, United Kingdom |