Surname Hongsub (Hongsub 
) , across the world, is an extremely rare last name. The family name Hongsub is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Predominantly, Hongsub is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hongsub | South Korea, United States, China, Thailand |