The Institute for Nuclear Research and Nuclear Energy (INRNE) of the Bulgarian Academy of Sciences is founded in 1972 carrying the main part of activities of the former Institute of Physics with Atomic Research Centre. INRNE is the leading Bulgarian Institute for fundamental and applied researches in the field of elementary particles and nuclear physics, high energy physics and nuclear energy, radiochemistry, radioactive wastes treatment, monitoring of the environment, nuclear instruments development and so on.

The Institute's staff of about 350 (150 of them are scientific researchers) works in more than 30 research groups. Five basic installations are commissioned at the INRNE.

• Bulgarian Academy of Sciences

• Институт ядерных исследований и ядерной энергии Болгарской АН