Family name カエナ (Kahena 
, カエナ 
) , in the entire world, is a rare cognomen. The family name カエナ is habitual in Tanzania, where it is a rare surname, Japan, where it is a very rare surname, and France. Also, カエナ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kahena | Tunisia, Tanzania, India, France, Brazil |
| カエナ | Japan |