A

Abdon and Sennen, Saints

Abercius of Hierapolis, Saint

Abraham Kidunaia, Saint

Abundius, Saint

Acathius of Melitene, Saint

Acisclus and Victoria, Saints

Adalard of Corbie, Saint

Adalbert of Magdeburg, Saint

Adalbert of Prague, Saint

Adam & Eve, Saints

Adamnan of Iona, Saint

Adelaide of Italy, Saint

Ado of Vienne, Saint

Adrian and Eubulus, Saints

Adrian of Canterbury, Saint

Æbbe of Coldingham, Saint

Aedesius, Saint

Ælfheah of Canterbury, Saint

Æthelberht, Saint

Æthelburh of Faremoutier, Saint

Aethelthryth, Saint

Aethelwold of Winchester, Saint

Afra of Augsburg, Saint

Agape, Chionia, and Irene, Saints

Agapitus of Palestrina, Saint

Agapitus of Phrygia, Saint

Agathius, Saint

Agatho, Saint (pope)

Agericus of Verdun, Saint

Agnello of Naples, Saint

Agnes of Bohemia, Saint

Agnes of Montepulciano, Saint

Agnes of Poitiers, Saint

Agostino Novello, Blessed

Agricola of Avignon, Saint

Aichardus, Saint

Aimone Taparelli, Blessed

Albert the Great, Saint

Albert of Cashel, Saint

Albert of Louvain, Saint

Albert of Trapani, Saint

Alberto da Bergamo, Blessed

Alberto of Cordoba, Blessed

Albinus of Angers, Saint

Aldegonde, Saint

Aldric of Le Mans, Saint

Alessio Falconieri, Saint

Alexander, Saint

Alexander of Alexandria, Saint

Alexander of Bergamo, Saint

Alexander Briant, Saint

Alexander the Carbonarius of Comana, Saint

Alexander Sauli, Saint

Alexandrian Plague, Martyrs of the

Alexius of Kiev, Saint

Alexius of Rome, Saint

Alferius of Cava, Saint

Alfonso of Navarrete, Blessed

Alfred the Great, King

Alfred Pampalon, Venerable

Aloysius Gonzaga, Saint

Alphaeus and Zacchaeus, Saints

Alypius of Thagaste, Saint

Alphonsus Rodriguez, Saint

Alphonsus Mary Liguori, Saint

Amabilis of Riom, Saint

Amadeus of Savoy, Blessed

Amadio Amidei, Saint

Amalberga of Maubeuge, Saint

Amator of Auxerre, Saint

Amatus of Grenoble, Saint

Amatus of Sion, Saint

Ambrose Sansedoni, Saint

Amos the Prophet, Saint

Ampelius, Saint

Amphibalus, Saint

Anacletus, Saint

Ananias, Azarias, and Misael, Saints

Anastasia, Saint

Anastasia the Elder, Saint

Anastasius, Saint

Anastasius Hartmann, Venerable

Anastasius of Persia, Saint

Anastasius Sinaita, Saint

Anatolia, Saint

Andeolus, Saint

Andochius, Thyrsus, and Felix, Saints

André-Hubert Fournet, Saint

Andrea Beltrami, Venerable

Andrea Corsini, Saint

Andrea Grego da Peschiera, Blessed

Andreas of Chios, Saint

Andrew the Apostle, Saint

Andrew Avellino, Saint

Andrew Bobola, Saint

Andrew of Crete, Saint

Andrew of Florence, Saint

Andrew of Fiesole / Andrea di Scozia, Saint

Andrew Kim Taegon, Saint

Andrew Nam-Thuong, Saint

Andronicus and Athanasia, Saints

Angela of Foligno, Saint

Angela Merici, Saint

Angelina di Marsciano, Blessed

Angelo of Acri, Saint

Angiolo Bonsi, Blessed

Anianus, Saint and Saint Marinus

Anicetus, Saint

Anna the Prophetess, Saint

Anna Juliana Gonzaga, Venerable

Anna Maria Taigi, Blessed

Anne of Saint Bartholomew, Blessed

Anne Catherine Emmerich, Blessed

Anne de Gonzague de Clèves

Anne Line, Saint

Anne-Marie Javouhey, Blessed

Anselm of Nonantola, Saint

Anthelm of Belley, Saint

Anthimus of Rome, Saint

Antônio de Sant’Anna Galvão, Saint

Anthony Abbot, Saint

Anthony of Carthage, Saint

Anthony Maria Zaccaria, Saint

Anthony Mary Claret, Saint

Anthony Neyrot, Blessed

Anthony of Padua, Saint

Anthony Pavone, Blessed

Antiochus, Saint

Antoine Chevrier, Blessed

Antoinette Fage (Marie de Jésus), Venerable

Antonia of Florence, Blessed

Antonina, Saint

Antoninus of Florence, Saint

Antoninus of Apamea, Saint

Antoninus of Piacenza, Saint

Antonio della Chiesa, Blessed

Antonio Alonso Bermejo, Venerable

Antonio Maria Gianelli, Saint

Apollinaris of Hierapolis, Saint

Apollinaris of Ravenna, Saint

Apollonia, Saint

Apollonius, Saint

Apollonius of Brescia, Saint

Aphrahat, Saint

Aprus of Toul, Saint

Aquila and Priscilla, Saints

Arcadius of Mauretania, Saint

Ardalion, Saint

Aredius of Gap, Saint

Aredius of Limoges, Saint

Arethas of Najran, Saint

Armand Jean le Bouthillier de Rancé, Abbé

Armogastes, Saint

Arnold of Arnoldsweiler, Saint

Arnulf of Metz, Saint

Arsenius the Great, Saint

Artaldus, Saint

Artemius, Saint

Athanasia of Aegina, Saint

Athanasius, Saint

Augustin Kažotić, Blessed

Augustine, Saint

Augustine of Canterbury, Saint

Augustine Fangi of Biella, Saint

Aurea of Ostia, Saint

Austregisilus, Saint

Auxentius, Saint