Cognomen Сэу (Sehu 
, Seu 
, Seou 
) , all over the world, is quite a common surname. The surname Сэу is characteristic of Moldova, where it is quite a rare surname, Ivory Coast, and South Korea. In absolute terms, it is commonest in Nigeria, South Korea, and Italy. Also, Сэу is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sehu | United States, India, Indonesia, Nigeria, Malaysia |
| Seu | Italy, South Korea, Indonesia, Nigeria, Ivory Coast |
| Seou | France, United States, South Korea, Democratic Republic of the Congo, Malaysia |
| Сэу | Kazakhstan, Russia |