The Macchi C.202 Folgore (Italian "thunderbolt") was a World War II fighter aircraft built by Macchi Aeronautica and operated mainly by the Regia Aeronautica (RA; Royal (Italian) Air Force). Macchi aircraft designed by Mario Castoldi received the "C" letter in their model designation, hence the Folgore is referred to as the C.202 or MC.202.