Cognomen Kaewsangsai (Kaewsangsai 
) , worldwide, is a rare last name. The surname Kaewsangsai is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kaewsangsai | Thailand |
| saharat kaewsangsai Thai footballer, TH (b. 1994) |
|
Apilat, Apitha, Pawana, Saharat, Chotaya, Pavinee, Jukkrit, Sukhumaabhorn, Thonyatorn, and Wichaiwat