Cognomen คันธศักดิ์ศิริ (คันธศักดิ์ศิริ 
, Canthasaksiri 
) , all over the world, is a very rare surname. The last name คันธศักดิ์ศิริ is habitual in Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| คันธศักดิ์ศิริ | Thailand |
| Canthasaksiri | United States |