Family name Yongseok (Yongseok 
) , around the globe, is a rare surname. The last name Yongseok is characteristic of South Korea, where it is quite a rare surname, Malaysia, where it is a rare surname, and Cambodia, where it is a very rare surname. In absolute terms, it most frequently occurs in South Korea, Malaysia, and China. More prevalently, Yongseok is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yongseok | China, South Korea, Malaysia, United States, Canada |