See also the related category celtic.
Fionnia is not frequently used as a baby girl name. It is not listed in the top 1000. Out of the family of girl names directly linked to Fionnia, Fiona was the most widely used in 2018.
Baby names that sound like Fionnia include Fainia, Faviana, Favianna, Fureena, Phenicia, Phiomeana, Phenicea, Faena, Fainah, Fainche, Fama, Famah, Fana, Fanah, Fanaka (African and Swahili), Fancy, Fanechka, Fanetta, Fang (Chinese), and Fang Hua (Chinese).