Eugenia is a feminine first name related to the masculine name Eugene that comes from the Greek eugenes 'well-born', from eu- 'well' + genes 'born' (from genos).
[1] Variants include Eugénia (Portuguese), Eugénie (French), Eugènia (Catalan), Uxía (Galician), Evgenia (Greek: Ευγενία), Eugenija (Lithuanian) and Yevgenia or Yevgeniya (Russian: Евгения; also transliterated as Evgenia or Evgeniya) as well as Yevheniia in Ukraine.