Surname Seplin (Seplin 
) , worldwide, is a very rare last name. The cognomen Seplin is habitual in Germany, where it is a very rare surname, Honduras, and the United States, where it is an extremely rare surname. More prevalently, Seplin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Seplin | Germany, Philippines, United States, India, Indonesia |