- ✠ O.L. Help of Christians
- ✠ O.L. of Fatima
- ✠ O.L. of Good Counsel
- ✠ O.L. of Guadalupe, Patroness of Latin America
- ✠ O.L. of La Salette
- ✠ O.L. of Lourdes
- ✠ O.L. of Mount Carmel
- ✠ O.L. of Perpetual Help
- ✠ O.L. of the Rosary, (Commemorating the Victory of Lepanto)
- ✠ Saint Odon, or Eudes, Benedictine, abbot of Cluny
- ✠ St. 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 of Ransom, or of Mercy
