Around the globe, สมเย็น (สมเย็น 
) is a very rare male forename. The forename สมเย็น is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare male name. More prevalently, สมเย็น is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| สมเย็น | Thailand |