Cognomen Yongjun (Yongjun 
) , in the entire world, is a rare last name. The surname Yongjun is characteristic of Lithuania, where it is a rare surname, Singapore, and Malaysia, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in China, Malaysia, and Singapore. More frequently, Yongjun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yongjun | South Korea, Japan, United States, China, Zambia |