The first name Wanja is ♀ female and ♂ male.
Wanja is a masculine name in Russian and East Slavic, a feminine name in Bulgarian and South Slavic and a feminine name in Brazilian. It is a diminutive of the Slavic name Iwan, which is a form of Johannes.
Wanja means “Yahweh is gracious” (from Hebrew “jô/יֹו” = referring to the Hebrew God + “chanan/חָנַן” = to be gracious/to show favor).