Surname วิศิษฎ์ศักดิ์ (Wisitsak 
, Visitsak , วิศิษฎ์ศักดิ์ ) , across the world, is a very rare cognomen. The family name วิศิษฎ์ศักดิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much more frequently, วิศิษฎ์ศักดิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wisitsak | Thailand, United States |
| วิศิษฎ์ศักดิ์, Visitsak | Thailand |