Adao \a-dao\ as a boy's name is a variant of Adam (Hebrew), and the meaning of Adao is "earth".

The baby name Adao sounds like Ado, Aad, Ade, Addy, Ad, Adi, Adya, Ido, Iddo, Odo and Udo. Other similar baby names are Adal, Adan, Adamo and Adar.