Family name Croi (クロイ 
, Croi 
) , around the globe, is a very rare cognomen. The last name Croi is habitual in Canada, where it is a very rare surname, Germany, where it is an extremely rare surname, and Italy. Much more prevalently, Croi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| クロイ | Japan |
| Croi | Canada, Brazil, France, Australia, Germany |