Japanese tattoo is called irezumi or horimono in Japanese. Traditionally, Japanese tattoo artists are called horimono-shi. There are many tattoo artists and tattoo shops in Japan. Most of them require reservations.
*I can't personally vouch the quality of the shops listed. Please visit their websites to get a good idea of their quality of work.
See Japanese Tattoo Images
Japanese tattoo Shops and Tattoo Artists
