Surname Fronia (Fronia 
, Фроня 
) , across the world, is a rare family name. The cognomen Fronia is habitual in Poland, where it is a rare surname, Germany, and Romania. Also, Fronia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fronia | Poland, France, United States, Romania, Germany |
| Фроня | Belarus, Kazakhstan, Russia, Ukraine |