Around the globe, Seimon (Seimon 
) is a very rare unisex first name. The first name Seimon is characteristic of Nigeria, where it is a very rare gender-neutral name, Brazil, where it is an extremely rare male name, and India, where it is an extremely rare gender-neutral name. Also, Seimon is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Seimon | Japan, Nigeria, Ethiopia, United States, Sri Lanka |
| seimon glyn (b. 1959) |
|