Cognomen Фридерика (Federica 
, Friederike 
, Frederica , among others...) , across the world, is quite a common surname. The last name Фридерика is characteristic of Italy, where it is quite a rare surname, Uruguay, and Israel. In absolute terms, it is commonest in Mexico, Italy, and Indonesia. Predominantly, Фридерика is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Frederica, Federica | Germany, Italy, Philippines, Mexico, United States |
| Friederike | Germany, Italy, Austria, Mexico, United States |
| Friderika | Germany, United Kingdom, South Africa, United States, Brazil |
| Friderica | Germany, United Kingdom, Brazil, United States, Israel |
| Фридерика | Kazakhstan, Russia |
Bedriska, Bedřiška, Frederika, Frederikke, Frederique, Fredrika, Fridrika, Friðrika, Fryderyka, Frédérika, Frédérique, Riikka, Ulrica, Ulrika, Ulrike, Ulrikke, Ulryka, Φρειδερίκη, Риикка, Ульрика, Ульрике, Федерика, Фредерик, Фредерика, Фредрика, Фридрика, פרידריקה, ウルリカ, フェデリカ, フレデリック, and 弗雷德里克
Любчанская, and Давыдова