Last name คงศักดิ์ศิริ (คงศักดิ์ศิริ 
) , in all the world, is an extremely rare surname. The family name คงศักดิ์ศิริ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| คงศักดิ์ศิริ | Thailand |