Eliana Assyrian/Akkadian, אֶלִיעַנָה (Hebrew), Ηλιάνα (Greek), إليانا (Arabic), is a female given name found with that spelling in Italian, Portuguese and Spanish.
Many sources derive it from Akkadian/Assyrian, literally translated as "My God has answered me." It is composed of three Hebrew elements: EL, meaning GOD; ANA, meaning ANSWERED; and the Yud, located after EL, indicating first person possession. Biblical sources: "And he erected there an altar, and called it El- [God] elohe-Israel [El, the God of the Patriarch Israel]" (Genesis 33:20). "And Efron answered [ana] Abraham, saying unto him," (Genesis 23:14).
It can also be derived from the Late Latin Aeliāna, the feminine form of the Latin family name Aeliānus (of the sun), which is derived from the Greek hēlios (sun).
Moreover, it is related to the Greek name Helene, and would thus be one of the many forms derived from that Greek name, such as Elaine from Old French. In Arabic, it is translated as "the Bright" .