The 2023 “Enrico Fermi” Prize of the Italian Physical Society (SIF) has been awarded ex-aequo to Massimo Ferrario, researcher at the INFN Frascati National Laboratories, Lucio Rossi, professor at the University of Milan and INFN researcher, and Frank Zimmermann, researcher at CERN, “for their outstanding developments in various advanced particle acceleration technologies, ranging from acceleration by plasma to the realization of ultra-high energy particle colliders.” The Prize was established by the Italian Physical Society in 2001 to mark the centenary of Fermi's birth, and is awarded annually to one or more members who have particularly honoured physics with their achievements. The award ceremony will take place at the opening session of the 109th National Congress of the Society, in Salerno, Italy, on 11 September 2023.