Family name Samutchaiyakit (Samutchaiyakit 
) , in all the world, is an extremely rare cognomen. The surname Samutchaiyakit is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Samutchaiyakit | Thailand |
Thanaphaon, and Sitthichok