Surname กูประเสริฐ (กูประเสริฐ 
) , in the world, is a very rare last name. The surname กูประเสริฐ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, กูประเสริฐ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| กูประเสริฐ | Thailand |