日本原子力研究開発機構
The Japan Atomic Energy Research Institute () (JAERI) is a former semi-governmental organization that existed for the purpose of further nuclear power in Japan. It was created in June 1956 by the Atomic Energy Basic Law. It merged with Japan Nuclear Cycle Development Institute and became Japan Atomic Energy Agency on October 1, 2005, which currently carries out the purpose outlined in the law. It was called Genken (原研) for short.