Cognomen สิมสน (Simson 
, สิมสน 
) , throughout the world, is quite a common last name. The surname สิมสน is characteristic of Suriname, where it is quite a common surname, Estonia, and Namibia. Not in comparison with a country's population, it most frequently occurs in Indonesia, Germany, and the United States. Also, สิมสน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Simson | Germany, Pakistan, United States, India, Indonesia |
| สิมสน | Thailand |