Surname Pelagiya (Пелагия 
, Pelagiya 
) , worldwide, is a rare family name. The last name Pelagiya is habitual in Bulgaria, where it is quite a rare surname, and Kyrgyzstan, where it is a very rare surname. More prevalently, Pelagiya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Пелагия | Kazakhstan, Russia, Kyrgyzstan, Bulgaria, Ukraine |
| Pelagiya | India, Canada, Bulgaria |