Daria \d(a)-ria\ as a girl's name is pronounced DAR-ee-ah. It is of Greek and Persian origin, and the meaning of Daria is "maintains possessions well". Feminine form of Darius, a Persian royal name. Darya also means "the sea" in Persian. Variants may also be feminine forms of names like Daryl and Darin.
For more information, see also the related name Dara.