Cognomen Λουί (Louis 
, Λουί 
) , all over the world, is a widespread last name. The family name Λουί is habitual in Latin America and the Caribbean, particularly Saint Lucia, where it is a widespread surname, Haiti, where it is a common surname, and Grenada (explore the name in all countries). Not in comparison with a country's population, this name is the most popular in France, Haiti, and the United States. More prevalently, Λουί is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Louis | South Africa, United States, Haiti, Democratic Republic of the Congo, France |
| Λουί | Greece |
Chlodwig, Clodoveo, Clovis, Clóvis, Koldo, Lajos, Lewis, Lewys, Ljudevit, Lluis, Lluís, Loeiz, Loic, Loui, Louie, Love, Loïc, Loïck, Ludovic, Ludovico, Ludovicus, Ludvig, Ludvik, Ludwig, Ludwik, Lui, Luigi, Luijs, Luis, Luiz, Luã S, Luís, Miłość, Λουδοβίκος, Λούης, Кловис, Лайош, Лове, Лоик, Лудвиг, Лудвик, Луи, Луиджи, Луис, Луис, Луи, Луиш, Луіс, Луіш, Луї, Луїс, Льюис, Льюіс, Льюїс, Любоў, Людвиг, Людвик, Людвіг, Людвік, Людовик, Людовік, Люис, Люі, Люіс, Хлодвиг, לואיס, לואיק, לודוויג, لايوش, لودفيغ, لوي, لويجي, لويس, لويك, লাভ, লুইস, ラドウィグ, ルイ, ルイジ, ルイス, ルドヴィック, 刘易斯, 路易, 路易士, 路易斯, and 사랑