I'm not quite sure what you mean. There's no direct equivalent of
Joanna in Japanese.
Joanna means "God is Gracious", so if you wanted a name with a similar meaning in Japanese, you could use
Yuko, meaning "Graceful Child".
Click here:
Joanna,
Yuko for details.
♦ Chrisell ♦
All we have to decide is what to do with the time that is given us. - J.R.R. Tolkien.