Last name ประเสริฐสุก (ประเสริฐสุก 
) , all around the world, is an extremely rare family name. The surname ประเสริฐสุก is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, ประเสริฐสุก is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ประเสริฐสุก | Thailand |