Family name Yonju (Yonju 
) , all around the world, is a rare cognomen. The surname Yonju is habitual in Japan, where it is a rare surname, and Nigeria, where it is an extremely rare surname. Likewise, Yonju is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yonju | South Korea, United States, Japan, Nigeria |