Oona \o(o)-na\ as a girl's name is pronounced OO-nah. It is of Scottish, Irish and Gaelic origin. Variant of Una (Latin) "one". Playwright Eugene O'Neill gave this name to his daughter.

Oona has 2 variant forms: Oonagh and Una.

For more information, see also the related name Agnes.

Baby names that sound like Oona are Oonah, Iona, Yona and Jona.