Family name ใสสุก (Saisuk 
, ใสสุก ) , around the world, is a rare last name. The cognomen ใสสุก is characteristic of South-eastern Asia, particularly Thailand, where it is quite a rare surname, and Malaysia, where it is an extremely rare surname. Very seldom, ใสสุก is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Saisuk | Thailand, United States, Malaysia |
| ใสสุก | Thailand |