- ✠ Nov.- O.L. La Salette
- ✠ Novena O.L. of Fatima
- ✠ O.L. of Guadalupe, Patroness of Latin America
- ✠ O.L. of the Miraculous Medal, gift of the Blessed Virgin Mary
- ✠ Saint Odon, or Eudes, Benedictine, abbot of Cluny
- ✠ Saint Olympia, of Constantinople, Widow and Deaconess
- ✠ Saint Omer, Bishop of Therouanne
- ✠ St. Onesimus, Bishop of Ephesus and Martyr
- ✠ Saint Oswald, Archbishop of York
- ✠ Our Lady Help of Christians
- ✠ Our Lady of Fatima
- ✠ Our Lady of Good Counsel
- ✠ Our Lady of La Salette
- ✠ Apparition of Our Lady of Lourdes
- ✠ Our Lady of Mount Carmel
- ✠ Our Lady of Perpetual Help
- ✠ Our Lady of Ransom, or of Mercy
- ✠ Our Lady of the Rosary, Commemorating the Victory of Lepanto
