Cognomen Simantiris (Simantiris 
) , in the world, is a rare last name. The cognomen Simantiris is characteristic of Greece, where it is quite a rare surname, Israel, where it is a very rare surname, and South Africa, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in Greece, the United States, and South Africa. Much less frequently, Simantiris is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Simantiris | Greece, South Africa, Canada, Spain, United States |