Surname คำสินศักดิ์ (คำสินศักดิ์, Kamsinsak 
) , all over the world, is an extremely rare family name. The cognomen คำสินศักดิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kamsinsak | Thailand |