The Order Sons of Italy in America (Italian: Ordine Figli d’Italia in America, OSIA) is the largest and the oldest Italian American fraternal organization in the United States. A similar organization exists in Canada. It has more than 600,000 members and supporters. Since its founding in 1905 it has established more than 2,800 lodges in 43 states, with the headquarters located near Capitol Hill in Washington, D.C.
