Japanese publisher translates HP -

Summary:
Yuko Matsuoka, has started to translate all of the HP books

Article:

Yuko Matsuoka, the president of Say-zan-sha Publications Ltd. (a small Japanese publishing firm) got hooked on Harry Potter while in England in 1998. Matsuoka went through the process of obtaining Japanese translating rights for the entire series and is currently translating OotP herself.

Also click here to see an interview and article about her