Surname Seungwan (Seungwan 
, 승완 ) , throughout the world, is a very rare cognomen. The family name Seungwan is habitual in Cambodia, where it is a very rare surname, Malaysia, where it is an extremely rare surname, and China. Predominantly, Seungwan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Seungwan | South Korea, Canada, United States, Malaysia, China |
| 승완 | South Korea |