Surname Gian-Luigi (Gian-Luigi 
) , in the entire world, is an extremely rare family name. The cognomen Gian-Luigi is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. Much more prevalently, Gian-Luigi is the forename as well as the last name. Parts of the name also exists independently as a first name Gian, and a first name Luigi.
| VARIANT | COUNTRY |
|---|---|
| Gian-Luigi | Germany, Italy, France, United States |