Surname ジャーン (Giaan 
, ジャーン) , all around the world, is an extremely rare cognomen. The surname ジャーン is characteristic of Latin America and the Caribbean, particularly Mexico, where it is an extremely rare surname. Much more prevalently, ジャーン is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Giaan | South Africa, Australia, Mexico, United States, India |