Nomura Research Institute, Ltd. (NRI; Japanese: 株式会社野村総合研究所 or 野村総研 for short) is the largest economic research and consulting firm in Japan, and a member of the Nomura Group.

It owns ten subsidiaries in Japan and multiple subsidiaries overseas, in India, New York City, Dallas, London, Seoul, Shanghai, Beijing, Hong Kong, Moscow, Taipei, the Philippines, Singapore, Bangkok, and Jakarta.

[2] Nomura Research Institute (Japan's first full-fledged private comprehensive think tank) and Nomura Computer Systems, Inc. (Japan's first systems development company to use commercial computers for business purposes) merged to form the current Nomura Research Institute, Ltd. With this merger, the company became a total provider of research, consulting, IT solutions, and system operations.

The company's strengths lie in management consulting and IT consulting for private companies and government agencies, as well as system integration and development for clients in the financial and retail industries.

1 in 2018 and 2020 in the ranking of companies to watch, as selected by students at the University of Tokyo seeking employment.