Family name Foyjun (Foyjun 
) , across the world, is an extremely rare last name. The family name Foyjun is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more frequently, Foyjun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Foyjun | Thailand, Bangladesh, India, United States, United Kingdom |