Family name ศุลักษณ์ (Sawulak 
, ศุลักษณ์ 
) , in the entire world, is a very rare last name. The family name ศุลักษณ์ is habitual in Poland, where it is a very rare surname, the United Kingdom, where it is an extremely rare surname, and Thailand. Not in comparison with a country's population, it most frequently occurs in Poland, the United States, and the United Kingdom. Also, ศุลักษณ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sawulak | United Kingdom, Poland, United States, Canada |
| ศุลักษณ์ | Thailand |