Family name Lousis (Lousis 
, Лусис 
) , in the world, is a rare cognomen. The family name Lousis is characteristic of Greece, where it is a rare surname, Russia, where it is a very rare surname, and Kazakhstan. Very seldom, Lousis is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lousis | Germany, India, Greece, United States |
| Лусис | Kazakhstan, Russia, Ukraine |