Ada Sacchi Simonetta (April 19, 1874 – January 13, 1944) was an Italian librarian and women's rights activist. During her tenure as the head of the public library and museums in Mantua, she introduced new services and programs to make the library more democratic and reach more people, including Sunday hours, a public card catalog, and hospital libraries for soldiers during World War I. Driven by the difficult economic conditions faced by libraries in Italy, Sacchi founded a national association for library and museum officials, which advocated for library and museum interests in Italy, and eventually became part of the Italian Library Association. Sacchi was also active in the Italian women's rights movement, founding the Mantuan chapter of the Association for the Woman and serving as pres