Frances Sweeney (c. 1908 – June 19, 1944) was a journalist and activist who campaigned against fascism, antisemitism, and political corruption in 1940s Boston. She edited her own newspaper, the Boston City Reporter, and started the Boston Herald Rumor Clinic to combat fascist disinformation. Seeking to counteract the influence of the priest Charles Coughlin, whose antisemitic broadcasts were popular with Boston's Irish Catholics, she led protests and wrote editorials condemning the Christian Front and similar organizations. She was secretary of the American-Irish Defense Association of Boston and vice chairman of the Massachusetts Citizens' Committee for Racial Unity. A Catholic herself, Sweeney was threatened with excommunication when she criticized Cardinal William Henry O'Connell for his silence on Catholic antisemitism.