Ona is a ♀ female name.
Ona is a Lithuanian variant of the name Anna and a diminutive of the Catalan name Mariona, which derived from Maria.
Ona means “grace” and “favor” (from Anna) or “sea of bitterness”, “drop of the sea”, “star of the sea”, “rebelliousness”, “exalted one”, “beloved” and “wished for child” (from Mariona and Maria). In Catalan, Ona has also the meaning “wave”.