Cognomen Soonjong (Soonjong 
) , in the world, is a very rare surname. The family name Soonjong is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. Much more frequently, Soonjong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Soonjong | South Korea, Philippines, China, United States |