Throughout the world, ثمین (ثمین 
) is a very rare feminine forename. The first name ثمین is habitual in Southern Asia, particularly Iran, where it is a very rare feminine name.
| VARIANT | COUNTRY |
|---|---|
| ثمین | Iran |
|
ثمین باغچهبان Iranian musician, IR (b. 1925) |
|
| ثمین بلوری musician singer, IR |
|
|
| ثمین عابدخجسته badminton player, IR (b. 1999) |
|
|
| ثمین داوری IR (b. 1991) |
|