- ✠ Saint Sabas, Patriarchal Abbot in Palestine
- ✠ Saint Sabinus, Bishop of Spoleto, and Companions, Martyrs
- ✠ All Saints Day
- ✠ St. Saturninus, Bishop and Martyr
- ✠ St. Scholastica, Abbess
- ✠ St. Sebastian, Martyr
- ✠ Sts. Seraphia and Sabina, Martyrs
- ✠ St. Serenus, Solitary, Martyr
- ✠ Holy Servite Founders
- ✠ St. Servulus of Rome, Invalid and Beggar
- ✠ The Seven Sorrows of the B.V. Mary
- ✠ St. Severianus, Bishop and Martyr
- ✠ St. Severinus, Abbot
- ✠ Saint Silverius, Pope and Martyr
- ✠ St. Simeon of Jerusalem, Bishop and Martyr
- ✠ St. Simeon Stylites
- ✠ Sts. Simon and Jude, Apostles and Martyrs
- ✠ St. Simon Stock, Superior General of the Carmelite Order
- ✠ St. Simon, Infant Martyr
- ✠ St. Simplicius, Pope
- ✠ Sts. Soter and Caius, Popes, Martyrs
- ✠ St. Stanislaus Kostka, Jesuit, Patron of Youth
- ✠ St. Stanislaus of Cracow, Bishop, Martyr
- ✠ Bl. Stephanie Quinzani, Virgin
- ✠ Saint Stephen, Deacon and Protomartyr
- ✠ St. Stephen I, Pope and Martyr
- ✠ St. Stephen of Hungary, King of Hungary
- ✠ Stigmata of St. Francis, of Assisi
- ✠ Saint Susanna, Virgin and Martyr
- ✠ Saint Sylvester, Pope and Confessor
- ✠ St. Symphorian, Martyr
