Dedicated to The Holy Eucharist
- April 1
- St. Hugh of Grenoble
- April 2
- St. Francis Paola
- St. Mary of Egypt, Penitent
- April 3
- Pope St. Sixtus I
- St. Richard of Chichester, Bishop
- April 4
- St. Isidore of Seville, Bishop
- April 5
- St. Vincent Ferrer (The Angel of the Apocalypse)
- St. Irene, Virgin and Martyr
- April 6
- Pope St. Celestine I
- St. Juliana of Mount Cornillon, Virgin
- St. William
- April 7
- St. Herman Joseph, Priest
- April 8
- St. Perpetuus, Bishop of Tours
- St. Julie Billart
- Bl. Mary Assunta, Franciscan Missionary
- April 9
- St. Mary of Cleopas
- St. Prochorus, Deacon
- St. John the Almsgiver, Patriarch
- April 10
- St. Ezechiel the Major Prophet
- April 11
- St. Gemma Galgani, Mystic
- April 12
- Pope St. Julius I
- St. Sabbas, Martyr
- St. Zeno of Verona, Bishop and Martyr
- Bl. Catherine of St. Augustine, Virgin
- April 13
- St. Hermenegild, Martyr
- Bl. Margaret of Castello
- April 14
- St. Justin, Martyr
- SS. Tibertius and Maximian, Martyrs
- St. Lydwina of Schiedam, Virgin
- April 15
- SS. Basillisa and Anastasia, Martyrs
- St. Paternus, Bishop of Avranches
- St. Peter Gonzales, Dominican Priest
- April 16
- St. Benedict Joseph Labre
- SS. Engratia and Companions, Martyrs
- April 17
- St. Kateri Tekawitha
- April 18
- St. Apollonius, Martyr
- Pope St. Perfectus
- April 19
- St. Expiditus, Roman Martyr
- Pope St. Leo IX
- St. Timon, Deacon
- April 20
- St. Agnes of Montepulciano
- April 21
- Pope St. Anicetus I, Martyr
- St. Anslem, Bishop
- April 22
- Popes SS. Soter and Caius
- April 23
- St. George, Soldier and Martyr
- April 24
- St. Fidelis of Sigmaringen, Martyr
- April 25
- St. Mark the Evangelist, Martyr
- April 26
- Our Lady of Good Counsel
- April 27
- St. Peter Canisius
- St. Tychicus, Bishop
- St. Zita
- April 28
- St. Paul of The Cross
- St. Louis Grignon de Montfort
- St. Vitalis, Martyr
- April 29
- St. Peter of Verona, Martyr
- St. Hugh of Cluny
- April 30
- St. Catherine of Siena, Mystic
Under Mary's Mantle 