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| Title | Name | Feast Day |
|---|---|---|
| Thrilled to be Christian | St. Abercius | 10/22 |
| Unwilling Groom | St. Abraham Kidunaia | 3/16 |
| Slavic Martyr | St. Adalbert of Prague | 4/23 |
| Father of the Journeymen | Bl. Adolf Kolping | 12/4 |
| St. Bernard of the North | St. Aelred of Rievaulx | 1/12 |
| Protectors of the Scriptures | SS. Agape, Chionia and Irene | 2/15 |
| Martyrs to Doctrine | BB. Agathangelo and Cassian | 8/7 |
| Beloved but Unknown | St. Agnes | 1/21 |
| Promoter of Franciscans | St. Agnes of Bohemia | 3/2 |
| Timid Martyr, Hearty Martyr | SS. Thomas Reynolds and Alban Roe | 1/21 |
| The Charcoal-Burner | St. Alexander | 8/11 |
| Gentle | St. Alice | 6/15 |
| A Light in the Forest | St. Alice Kotowska | 6/13 |
| Pioneer School Sister | Bl. Alix | 10/22 |
| Who are | All Saints? | 11/1 |
| Enemy of Violence | St. Almachius | 1/1 |
| Hurrying to Heaven | St. Aloysius | 6/21 |
| Balkan Hero | Bl. Aloysius Stepinac, Cardinal Martyr | 2/10 |
| “Martyr” to Red Tape | St. Alphonsus | 8/1 |
| Saintly Widower | St. Alphonsus Rodriguez | 10/30 |
| Generous Duke | Bl. Amadeus IX | 3/30 |
| Governor, Prelate, Poet | St. Ambrose | 12/7 |
| Priest Until Death | St. Ambrose Barlow | 9/11 |
| American Saints | ||
| of the Salt-Marsh | St. Ammon | 10/4 |
| Promoter of St. Joseph | Bl. Andre Bessette | 1/6 |
| The First-Called | St. Andrew | 11/30 |
| Counter-Reformer | St. Andrew Avellino | 11/10 |
| "Twice Martyred" | St. Andrew Bobola | 5/21 |
| Martyrs of Vietnam | St. Andrew Dung-Lac and Martyrs | 12/26 |
| Guardians | Angel Guardians | 9/29, 10/2 |
| Pioneer Teaching Sister | St. Angela | 1/27 |
| Mystic with a Paintbrush | Bl. Angelico of Fiesole | 2/18 |
| "Ziggy" | Bl. Angelo of Acri | 10/30 |
| Housewife and Mystic | Bl. Anna Maria Taigi | 6/9 |
| "God's Grandparents" | SS. Anne and Joachim | 7/26 |
| Mother Whirlwind | Bl. Anne Javouhey | 7/15 |
| Protector of Priests | St. Anne Line | 2/27 |
| Pioneering Carmelite | Bl. Anne of Saint Bartholomew | 6/7 |
| Apostle of the North | St. Ansgar | 2/3 |
| Adult-Ed Bishop | St. Anthony Claret | 1/17 |
| Shocked into Wisdom | Bl. Anthony Grassi | 12/18 |
| Monastic Standard-bearer | St. Anthony of Egypt | 9/24 |
| St. Anthony of Padua | 6/13 | |
| Educating for Both Worlds | Bl. Anton Martin Slomsek | 9/24 |
| Martyrs | St. Apollonia and Friends | 2/9 |
| Pioneer Christian Couple | SS. Aquila and Priscilla | 7/8 |
| Modern Missionary | St. Arnold Janssen, SVD | 1/15 |
| Brother Failure | Bl. Arnold Reche | 10/23 |
| Not Of This World | St. Arsenius the Great | 7/19 |
| “Pillar of the Church” | St. Athanasius | 5/2 |
| Double Death | St. Augustina Pietrantoni, Martyr | 11/13 |
| St. Augustine the Great | 8/28 | |
| "Primate of All England" | St. Augustine of Canterbury | 5/27 |
