The Congregation of the Most Holy Redeemer (Latin: Congregatio Sanctissimi Redemptoris; CSsR), commonly known as the Redemptorists, is a religious congregation of the Catholic Church, dedicated to missionary work and founded by Saint Alphonsus Liguori at Scala, near Amalfi, Italy, for the purpose of labouring among the neglected country people around Naples. Members of the congregation are Catholic priests and consecrated religious brothers and minister in more than 100 countries.
The Redemptorists are especially dedicated to Our Mother of Perpetual Help and were appointed by Pope Pius IX in 1865 as both custodians and missionaries of the icon of that title, which is enshrined at the Redemptorist Church of St. Alphonsus Liguori in Rome. Many Redemptorist churches are dedicated to her.