The Radiophysical Research Institute (NIRFI), based in Nizhny Novgorod, Russia, is a research institute that conducts basic and applied research in the field of radiophysics, radio astronomy, cosmology and radio engineering. It is also known for its work in solar physics, sun-earth physics as well as the related geophysics. It also does outreach for the Russian education system. It was formed in 1956 as the Radiophysical Research Institute of the (Soviet) Ministry of Education and Science.