Propers of the Saints — May
- Sts. Philip and James, Apostles Ss. Philippi et Jacobi Apostolorum (05-01)
- Patronage of St. Joseph, Spouse of the Blessed Virgin Mary, Confessor S. Joseph Sponsi B.M.V. Confessoris (05-01c)
- Sts. Philip and James, Apostles Ss. Philippi et Jacobi Apostolorum (05-01cist)
- S. Athanasius, Confessor and Doctor of the Church S. Athanasii Episcopi Confessoris et Ecclesiæ Doctoris (05-02)
- S. Sigismundi, Martyris et Patroni Regni Bohemiæ (Propria Bohemiæ) (05-02AV)
- Finding of the Holy Cross Inventione Sanctæ Crucis (05-03)
- (05-03pl)
- Finding of the Holy Cross Inventione Sanctæ crucis (05-03t)
- St. Monica, Widow S. Monicæ Viduæ (05-04)
- S. Floriani Martyris (05-04pl)
- St. Pius V, Pope and Confessor S. Pii V Papæ et Confessoris (05-05)
- St. John the Apostle Before the Latin Gate S. Joannis Apostoli ante Portam Latinam (05-06)
- St. Stanislaus, Bishop and Martyr S. Stanislai Episcopi et Martyris (05-07)
- Apparition of St. Michael the Archangel In Apparitione S. Michaëlis Archangeli (05-08)
- (05-08pl)
- St. Gregory Nazianzen, Bishop, Confessor and Doctor of the Church S. Gregorii Nazianzeni Episcopi Confessoris et Ecclesiæ Doctoris (05-09)
- St. Gregory Nazianzen, Bishop, Confessor and Doctor of the Church S. Gregorii Nazianzeni Episcopi Confessoris et Ecclesiæ Doctoris (05-09t)
- St. Antoninus, Bishop and Confessor S. Antonini Episcopi et Confessoris (05-10)
- Sts. Gordian and Epimachus, Martyrs Ss. Gordiani et Epimachi Martyrum (05-10o)
- Sts. Philip and James, Apostles Ss. Philippi et Jacobi Apostolorum (05-11r)
- Ss. Nereus, Achilleus and Domitilla the Virgin and Pancras, Martyrs Ss. Nerei, Achillei et Domitillæ Virg. atque Pancratii Martyrum (05-12)
- St. Robert Bellarmine, Bishop, Confessor and Doctor of the Church S. Roberti Bellarmino Episcopi Confessoris et Ecclesiæ Doctoris (05-13)
- Our Lady of Fatima (05-13n)
- St. Boniface, Martyr S. Bonifatii Martyris (05-14)
- St. John Baptist de la Salle, Confessor S. Joannis Baptistæ de la Salle Confessoris (05-15)
- St. Ubald, Bishop and Confessor S. Ubaldi Episcopi et Confessoris (05-16)
- S. Joannis Nepomuceni Martyris (05-16n)
- (05-16pl)
- St. Pascal Baylon Confessor S. Paschalis Baylon Confessoris (05-17)
- St. Venantius, Martyr S. Venantii Martyris (05-18)
- S. John I, pope and martyr (05-18n)
- St. Peter Celestine, Pope and Confessor S. Petri Celestini Papæ et Confessoris (05-19)
- St. Pudentiana, Virgin S. Pudentianæ Virginis (05-19o)
- St. Bernardine of Siena, Confessor S. Bernardini Senensis Confessoris (05-20)
- S. Christopher Magallanes and companions, martyrs (05-21n)
- S. Rita of Cascia S. Ritæ de Cascia (05-22n)
- St. John Baptist de Rossi Confessor S. Joannis Baptistæ de Rossi Confessoris (05-23)
- St. John Baptist de Rossi, Confessor S. John Baptist Rossi Confessor (05-23t)
- Our Lady’s Saturday Sanctæ Mariæ Sabbato (05-24pl)
- St. Gregory VII, Pope and Confessor S. Gregorii VII Papæ et Confessoris (05-25)
- St. Urban, Pope and Martyr S. Urbanis Papæ et Martyris (05-25o)
- St. Philip Neri, Confessor S. Philippi Neri Confessoris (05-26)
- St. Eleutherius, Pope and Martyr S. Eleutherii Papæ et Martyris (05-26o)
- St. Bede the Venerable, Confessor and Doctor of the Church S. Bedæ Venerabilis Confessoris et Ecclesiæ Doctoris (05-27)
- St. John I, Pope and Martyr S. Joannis Papæ et Martyris (05-27o)
- St. Augustine of Canterbury, Bishop and Confessor S. Augustini Episcopi et Confessoris (05-28)
- St. Mary Magdalene de Pazzi, Virgin S. Mariæ Magdalenæ de Pazzis Virginis (05-29)
- St. Felix, Pope and Martyr S. Felicis I Papæ et Martyris (05-30)
- Blessed Virgin Mary, Queen Beatæ Mariæ Virginis Reginæ (05-31)
- St. Petronilla, Virgin S. Petronillæ Virginis (05-31o)