Cognomen เสริมสวัสดิ์ (เสริมสวัสดิ์ 
) , worldwide, is a very rare family name. The surname เสริมสวัสดิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Also, เสริมสวัสดิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| เสริมสวัสดิ์ | Thailand |
Semsawat, Seormsawad, and Sermsawat