Our Lady of Mercy College, Parramatta (OLMC), is a private, Roman Catholic, day school for girls, located in Parramatta, a western suburb of Sydney, New South Wales, Australia. It is adjacent to St. Patrick's Cathedral. Established in 1889 in the Mercy tradition, and based on the Gospel values of mercy and justice, the college caters for approximately 1,030 students from years 7 to 12. OLMC is affiliated with the Combined Catholic Colleges, the Catholic Girls Secondary Schools Sporting Association, the Alliance of Girls’ Schools Australasia, the Australasian Mercy Secondary Schools Association (AMSSA), the Association of Heads of Independent Schools of Australia (AHISA), and an affiliate member of the Association of Heads of Independent Girls' Schools (AHIGS). The College was founded by a group of Mercy sisters from Callan, County Kilkenny, Ireland. The Sisters of Mercy were invited to come run a Catholic school in Paramatta. Mother Mary Clare Dunphy led the sea voyage from Ireland to Australia in 1889. They opened the school on its present site in January 1889, with seven high school students and Mother M. Alacoque Kavanagh as the founding Principal.