Surname セギ (セギ 
, Séguy 
) , around the world, is a rare cognomen. The surname セギ is habitual in France, where it is a rare surname, Argentina, where it is an extremely rare surname, and the United States. More frequently, セギ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| セギ | Japan |
| Séguy | United States, Argentina, France, Democratic Republic of the Congo |