Last name Пелагия (Pelagia 
, Пелагия 
, Pelagiya 
) , all over the world, is a common cognomen. The surname Пелагия is characteristic of Poland, where it is quite a common surname, Greece, and Georgia. Likewise, Пелагия is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pelagia | Philippines, Poland, Tanzania, Greece, Peru |
| Пелагия | Kazakhstan, Bulgaria, Kyrgyzstan, Russia, Ukraine |
| Pelagiya | Canada, India, Bulgaria |
| Pelagija | Croatia, United States |