RIKEN is a large natural sciences research institute in Japan.
Founded in 1917, it now has approximately 3000 scientists on seven campuses across Japan, the main one in Wako, just outside Tokyo. RIKEN is an Independent Administrative Institution, whose formal name in Japanese is Rikagaku Kenkyūjo, and in English is the Institute of Physical and Chemical Research.
RIKEN conducts research in many areas of science, including physics, chemistry, biology, medical science, engineering and computational science, and ranging from basic research to practical applications. It is almost entirely funded by the Japanese government.