The 3rd Armored Infantry Regiment (Italian: 3° Reggimento Fanteria Corazzato) is an inactive armored infantry regiment of the Italian Army based in Persano in Campania. Originally the regiment, like all Italian tank units, was part of the infantry, but on 1 June 1999 it became part of the cavalry. Operationally the regiment was last assigned to the Infantry Division "Granatieri di Sardegna".