Giovanni Gallavotti is an Italian mathematical physicist, born in Naples on 29 December 1941. He is the recipient of the "Premio Nazionale Presidente della Repubblica", presso la Classe di Scienze Naturali dell'Accademia Nazionale dei Lincei, 18 June 1997, and the Boltzmann Medal awarded by IUPAP- International Union of Pure and Applied Physics), 11 July 2007, with the citation: He was an Invited Speaker with talk Renormalization theory and group in mathematical physics at the International Congress of Mathematicians (ICM) in 1986 in Berkeley and a Plenary Speaker at the ICM in 1998 in Berlin.