Last name Youngjae (Youngjae 
) , in all the world, is a rare surname. The family name Youngjae is habitual in South Korea, where it is quite a rare surname, Cambodia, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. Not in comparison with a country's population, it most frequently occurs in South Korea, China, and Cambodia. More frequently, Youngjae is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Youngjae | Canada, China, Cambodia, United States, South Korea |