Surname Seongman (Seongman 
) , globally, is a very rare family name. The surname Seongman is habitual in Canada, where it is an extremely rare surname, China, and the United States. Much more prevalently, Seongman is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Seongman | China, South Korea, Canada, United States |