Dedicated to Our Lady of Sorrows
- September 1
- St. Anna the Prophetess
- St. Giles, Abbot (Auxiliary Saint)
- St. Teresa Margaret of The Sacred Heart
- SS. Josua and Gideon (Old Testament)
- September 2
- St. Stephen of Hungary
- September 3
- Pope St. Pius X
- St. Seraphia, Virgin and Martyr
- St. Phoebe
- September 4
- St. Moses, Prophet and Lawgiver
- Pope St. Boniface I
- St. Rose of Viterbo
- St. Rosalia, Virgin
- September 5
- St. Lawrence Justinian
- September 6
- St. Zacharias the minor Prophet
- St. Eleutherius, Abbot
- September 7
- Vigil of the Nativity of the Blessed Virgin Mary
- St. Clodoald, Confessor
- St. Regina
- September 8
- The Nativity of the Blessed Virgin Mary
- Pope St. Sergius I
- St. Adrian
- St. Corbinian of Freising
- September 9
- St. Peter Claver, Jesuit Missionary
- St. Omer, Bishop of Therouanne
- St. Gorgonius
- September 10
- St. Nicholas of Tolentino
- September 11
- St. John Gabriel Perboyre, Lazarist Priest and Martyr
- St. Paphnutius, Bishop in Egypt
- September 12
- The Most Holy Name of Mary, the Blessed Virgin
- St. Guy (Guido) of Anderlecht
- September 13
- St. Maurillius, Bishop of Angers
- The Fifth Apparition of Our Lady of Fatima
- September 14
- The Exaltation of The Holy Cross
- St. Crescentius
- September 15
- Our Lady of Sorrows (Second Commemoration)
- St. Nicomedes, Martyr
- September 16
- Pope St. Cornelius I, Martyr
- St. Cyprian, Bishop and Martyr
- St. Euphemia
- September 17
- Anniversary of the Stigmata of St. Francis of Assisi
- St. Hildegard of Bingen
- September 18
- St. Joseph of Cupertino
- September 19
- Our Lady of La Salette
- St. Januarius, Bishop and Martyr
- St. Theodore of Canterbury
- September 20
- St. Eustachius
- St. Andrew and the Korean Martyr Companions, Martyrs
- St. Candida
- September 21
- St. Matthew the Apostle, Martyr
- St. Jonas the minor Prophet (Who was inside a big fish (Jon. ii.))
- September 22
- St. Thomas of Villanova
- SS. Maurice and Companions, Martyrs
- September 23
- Pope St. Linus I, Martyr (First Successor to St. Peter)
- St. Padre Pio of Pietrelcina, Mystic
- September 24
- Our Lady of Ransom
- Our Lady of Walsingham
- September 25
- St. Cleophas
- Bl. Herman the Cripple
- St. Barry (Finbar) of Ireland
- September 26
- SS. Cyprian and Justina, Martyrs
- SS. John de Brébeuf, Isaac Jogues, and Companions, Holy Martyrs of North America
- September 27
- SS. Cosman and Damian, Martyrs
- September 28
- St. Wenceslaus, Duke of Bohemia and Martyr
- September 29
- St. Michael the Archangel, Champion
- September 30
- St. Jerome, Doctor of The Church