Family name ルイジ (Luigi 
, Luisi 
, ルイジ 
) , all around the world, is a common surname. The surname ルイジ is habitual in San Marino, where it is quite a common surname, Italy, and Luxembourg. Measured by absolute frequency, it most frequently occurs in Italy, the United States, and Venezuela. Much more frequently, ルイジ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Luigi | Italy, France, Brazil, United States, Germany |
| Luisi | Italy, France, Venezuela, United States, Philippines |
| ルイジ | Japan |
Chlodwig, Clodoveo, Clovis, Clóvis, Lajos, Lewis, Lewys, Liji, Lluis, Lluís, Loeiz, Loic, Louis, Loïc, Loïck, Ludovic, Ludovico, Ludovicus, Ludvig, Ludvik, Ludwig, Ludwik, Luigge, Luiji, Luis, Luiz, Luã S, Luís, Riji, Λουί, Λουδοβίκος, Кловис, Лайош, Лоик, Лудвиг, Лудвик, Луи, Луиджи, Луис, Луис, Луи, Луиш, Луіс, Луіш, Луї, Луїс, Льюис, Льюіс, Льюїс, Людвиг, Людвик, Людвіг, Людвік, Людовик, Людовік, Люис, Люі, Люіс, Хлодвиг, לואיס, לואיק, לודוויג, لايوش, لودفيغ, لويجي, لويس, لويك, লুইস, ラドウィグ, ルイ, ルイス, ルドヴィック, 刘易斯, 路易, 路易士, and 路易斯