Cognomen Seyyedin (Seyyedin 
) , globally, is a very rare surname. The surname Seyyedin is characteristic of Iran, where it is a very rare surname, Canada, where it is an extremely rare surname, and the United States. Much less frequently, Seyyedin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Seyyedin | Canada, Iran, United States |