Particle Physics research in Lecce covers both theoretical and experimental aspects and is supported by the INFN (National Institute of Nuclear Physics). The division of Lecce INFN is hosted in the buildings of the Physics Department of University of Salento which allows for a complete program of studies from undergraduate to PhD, with lectures and laboratory courses in many fields ranging from Theoretical Physics to Astrophysics, from Condensed Matter to Nuclear and Subatomic Physics. Several services are organized and managed by all the staffmembers and by the students, such as the computer and networks systems, the electronics laboratory and the mechanical workshop. Among the various international collaborations in High Energy Physics, Astroparticle Physics and Medical Applications, Lecce participates to the ATLAS experiment since more than 30 years.