This list of organizations historically described as Communist fronts by the United States federal government includes the names of groups included in various reports of the Attorney General of the United States or House Un-American Activities Committee listing "subversive" or "Communist" front groups. While some of these were documentable mass organizations of the Communist Party USA, many were included out of convenience or political expedience. Inclusion on any of these lists should not be regarded as definitive proof of covert organizational ties or actual subversive intent.