Naoko \na(o)-ko\ as a girl's name.

The baby name Naoko sounds like Niko, Nakia, Neka, Nikky, Nikki, Niki, Nico, Nicky, Nike, Nika and Nicki. Other similar baby names are Kioko, Maeko, Natka, Naomi, Naoma, Nariko and Yoko.