Surname Samuth (สมุทร 
, Samuth 
) , in all the world, is a rare cognomen. The cognomen Samuth is characteristic of Thailand, where it is a rare surname, Cambodia, where it is a very rare surname, and France. Measured by absolute frequency, it most frequently occurs in Thailand, France, and the United States. More frequently, Samuth is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สมุทร | Thailand |
| Samuth | Thailand, France, United States, Cambodia, China |