Last name لويزي (Loisi 
, Luizi 
, Louisi ) , globally, is quite a rare family name. The cognomen لويزي is characteristic of Italy, where it is a rare surname, Belgium, and Argentina. In absolute terms, it is the most numerous in Italy, Argentina, and Brazil. Likewise, لويزي is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Loisi | Italy, United States, Tanzania, Argentina, Brazil |
| Luizi | Italy, Morocco, Angola, Brazil, Democratic Republic of the Congo |
| Louisi | Morocco, United States, Argentina, Brazil, Democratic Republic of the Congo |
| لويزي | Morocco, Iraq, Egypt |