Surname Seongpil (성필 
, Seongpil 
) , worldwide, is a very rare family name. The surname Seongpil is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. Much more prevalently, Seongpil is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 성필 | South Korea |
| Seongpil | Thailand, China, South Korea, United States |