Family name Kossis (Kossis 
) , worldwide, is a very rare cognomen. The family name Kossis is characteristic of Greece, where it is a rare surname, Australia, where it is a very rare surname, and France. Measured by absolute frequency, this name is the most popular in the United States, Greece, and France.
| VARIANT | COUNTRY |
|---|---|
| Kossis | Greece, France, United States, Australia |