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 | Brazil, Tanzania, Argentina, United States, Italy |
| Luizi | Brazil, Angola, Morocco, Democratic Republic of the Congo, Italy |
| Louisi | Brazil, Argentina, United States, Morocco, Democratic Republic of the Congo |
| لويزي | Egypt, Iraq, Morocco |