The National Institute for Nuclear Physics (Istituto Nazionale di Fisica Nucleare - INFN) is the Italian research agency dedicated to the study of the fundamental constituents of matter and the laws that govern them, under the supervision of the Ministry of Universities and Research (MUR). It conducts theoretical and experimental research in the fields of subnuclear, nuclear and astroparticle physics.
Groups from the Universities of Rome, Padua, Turin, and Milan founded the INFN in 1951 to uphold and develop the scientific tradition established during the 1930s by Enrico Fermi and his school.