Last name สงวนศักดิ์ (สงวนศักดิ์ 
, Sanguansak 
, Sa Nguansak ) , worldwide, is quite a rare surname. The cognomen สงวนศักดิ์ is habitual in Thailand, where it is quite a rare surname, and Hungary, where it is a very rare surname. Likewise, สงวนศักดิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sa Nguansak, สงวนศักดิ์, Saguansak | Thailand |
| Sanguansak | United States, Thailand, Hungary |