Surname คำสัมฤทธิ์ (คำสัมฤทธิ์, Kamsamrit 
) , all over the world, is an extremely rare family name. The last name คำสัมฤทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kamsamrit | Thailand |