Cognomen Chojun (Chojun 
) , all around the world, is a very rare last name. The last name Chojun is characteristic of Costa Rica, where it is a very rare surname, Indonesia, and Thailand. Predominantly, Chojun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chojun | Japan, Indonesia, Costa Rica, Thailand, India |