Mary Frances Xavier Warde R.S.M. (1810-1884) was one of the original Sisters of Mercy, a Roman Catholic religious congregation of women founded in Ireland by Catherine McAuley, and the foundress of the order in the United States.

The Sisters of Mercy is a religious institute for women in the Roman Catholic Church. It was founded in 1831 in Dublin, Ireland, by Catherine McAuley. As of 2019, the institute has about 6200 sisters worldwide, organized into a number of independent congregations. They also started many education and health care facilities around the world.