Cognomen Пелагеиа (Пелагеиа 
, Pelageia 
, Pelageya 
) , throughout the world, is a very rare surname. The surname Пелагеиа is habitual in Georgia, where it is a rare surname, Russia, where it is an extremely rare surname, and the United States. More prevalently, Пелагеиа is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Пелагеиа | Russia |
| Pelageia | Russia, Georgia, Philippines, United States, Brazil |
| Pelageya | Turkey, Russia, Bulgaria, United States, Greece |
| Pelagueia | United States |