Family name ステファニア (Stefania 
, Stefanía 
, ステファニア 
) , around the world, is a widespread cognomen. The surname ステファニア is characteristic of Poland, where it is a widespread surname, Romania, where it is quite a common surname, and Greece. Measured by absolute frequency, it is the most numerous in Poland, Romania, and Italy. Likewise, ステファニア is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Stefania | Romania, Italy, Poland, Argentina, Brazil |
| Stefanía | Spain, Mexico, Colombia, United States, Argentina |
| ステファニア | Japan |