Rakuten Institute of Technology (楽天技術研究所 Rakuten Gijyutsu-Kenkyujo) (RIT) is the R&D organization of Rakuten Inc. in Japan.
It is not a subsidiary company of Rakuten Group, but one department in charge of research and development for Rakuten Inc. The director is Masaya Mori（ja:森正弥).
Yukihiro Matsumoto, the chief designer of the Ruby programming language, has been Fellow of RIT since June 2007.
Areas of research include Natural Language Processing, Multimedia Processing, Data Mining, and Massive and Distributed Computing.