January 1 edit
Aedhan; Agrippinus of Autun; Almachius; Basil of Ancyra; Basil of Caesarea; Deposition of Basil of Caesarea; Circumcision of Christ; Clarus of Vienne; Concordius; Eugendus; Euphrosyne; Felix of Bourges; Frodobert; Fulgentius of Ruspe; Gregory of Nazianzus; Gregory of Nazianzus the Elder; Hugolinus of Gualdo; John and Rene Lego; Joseph Tommassi; Justin of Chieti; Name of Jesus; Octave of Christmas; Odilo of Cluny; Peter of Atroa; Solemnity of Mary, Mother of God; Telemachus (martyr); Thomaid; Vincent Strambi; William of Saint-Benigne; William of Saint-Benignus; Zdislava Berka;
January 2 edit
Acutio; Adelard of Corbie; Airald of Maurienne; Basil of Caesarea; Basil the Great; Bladulf; Caspar del Bufalo; Feast of the Holy Name of Jesus; George of Mytilene; Gregory of Nazianzus; John Camillus the Good of Milan; Johann Konrad Wilhelm Loehe; Macarius of Alexandria; Narcissus, Argeus, and Marcellinus; Marcolinus Ammani; Martyrs for the Holy Scriptures; Martyrs of the French Revolution; Munchin; Seraphim of Sarov; Stephana de Quinzanis; Pope Silvester I; Sylvester of Nicosia; Theodore of Marseilles; Vedanayagam Samuel Azariah; Vincentian of Aquitaine; Zortis of Mytilene;
January 3 edit
Abselama; Adranicus of Alexandria; Adronicus of Alexandria; Alanus de Solminihac; Pope Anterus; Bertilia of Mereuil; Blitmund of Saint-Valéry; Cyriac Chavata; Daniel of Padua; Fintan of Dún Blésce; Genevieve; Gordius the centurion; Malachi; Melito of Saint Sabas: Most Holy Name of Jesus; Nicasius of Rheims; Peter Balsam; Theogenes; Theopemptus and Thenoas;
January 4 edit
Abraham of Scetes; Abrunculus of Auvergne; Aedh Dubh; Aggaeus; Angela of Foligno; Appolinaria; Christiana Menabuoi; Delphinus of Bordeaux; Elizabeth Ann Seton; Ferréol of Uzès; Gregory of Langres; Hermes, Haggai and Gaius; John the Scholar; Libertius of Hamburg; Onuphrios of Gabrova; Oringa; Pharaildis; Rigobert, Bishop of Reims; Rigomerus of Meaux; Roger of Ellant; Thomas Plumtree;
January 5 edit
Acutus; Aemiliana; Appolinaris; Charles of Mount Argus; Conwoion of Brittany; Deogratias of Carthage; Dorotheus the Younger; Edward the Confessor; Eve of Epiphany; François Peltier, Jacob Ledoyen and Peter Tessier; Gerlac; Ignatius Aramburu; John Neumann; Mar Zaia; Mary Repetto; Peter Bonilli; Pope Telesphorus; Roger of Todi; Romanos of Karpenesi; Simeon Stylites; Stephen Corumani; Syncletica; Pope Telesphorus;
January 6 edit
Abo of Tiflis; African Martyrs; André Bessette; Carol Melchiori; Charles of Sezze; Epiphany (Christian); Erminold; Felix of Nantes; Gertrude of Delft; Guarinus of Sion; John de Ribera; Julian and Basilissa; Macarius the Scot; Maria Angela Astorch; Peter of Canterbury; Peter Thomas of Famagusta; Raphaela Mary; Wiltrudis;
January 7 edit
Afranus; Aldric of Le Mans; Ambrose Fernandez; Canute Lavard; Cedd; Charles of Sezze; Crispin of Pavia; Edward Waterson; Ecumenical Patriarch Kyros of Constantinople; John the Baptist; Kentigerna; Lucian of Antioch; Matthew of Girgenti; Raymond of Peñafort; Reinold; Saint Aldric; Sanctinus of Verdun; Tillo; Valentine of Chur; Valentine of Raetia;
January 8 edit
Abo; Abo of Tiflis; Aemilianus; Afflinus; Agatho and Theoctistus; Ailbe; Apollinaris Claudius; Archbishop Atticus of Constantinople; Dominica the Righteous; Epiphany (Christian); Saint Erhard; Saint George (hermit); Gudula; Helladius of Libya; Julian of Beauvais; Karterios the Martyr; Laurence Giustiani; Lucian of Beauvais; Martyrs of Achmin; Martyrs of Panopolis; Maximian of Beauvais; Maximus of Pavia; Nathalan of Aberdeen; Pega; Severinus of Noricum; Severinus of Septempeda; Theophilus the Deacon; Thorfinn; Wulfsin;
January 9 edit
Abhor and Mehraela; Achius; Adrian of Canterbury; Agatha Yi; Aggai of Edessa; Alix Le Crercq; Amba Hor; Antony Fatati; Apollinaris Claudius; Barbasymas; Berhtwald of Canterbury; Eustratius the Wonderworker; Fillan; Honoratus of Bourges; Apa Hor; Julia della Rena; Julian and Basilissa; Marcellinus of Ancona; Marciana; Peter Joseph de Cloriviere; Peter of Sebatea; Philip I, Metropolitan of Moscow; Teresa Kim; Wanignus;
January 10 edit
Abdias; Pope Agatho; Aggai of Edessa; Anne of Monteagudo; Arcontius of Viviers; Benicasa of La Cava; Dermot Diarmaid; Domitian of Melitene; Giles of Lorenzana; Gregory of Nyssa; Pope Gregory X; Gundisalvus of Braga; John the Good; Marcian of Constantinople; Pope Miltiades; Obadiah; Paul Ginhac; St. Peter Orseolo; Paul Ginhac; Petronius of Die; Rogation of the Virgins; Saethrith; Valerius of Limoges; William Laud; William of Bourges;
January 11 edit
Abselama; Agapius of Opames; Agentus, Donatus; Alexander, bishop of Fermo(martyr); Augustinus, Salvius, Felix, Donatus, Florus, Geminus, Pacius, Pausalinus, Eugenius, Stephanus, Philo. Felicitas, Cyriacus, Ebiciarius, Cartelius, Morasitus, and companions; Honorata of Pavia; Pope Hyginus; Leucius of Brindisi; Mary Slessor; Massacre of the Innocents; Saint Paulinus II; Peter Abselamus; Salvius of Africa; Theodosius the Cenobiarch; Theodosius the Cenobite; Typasius; Vitalis of Gaza; William Carter;
January 12 edit
Adurparva, Mihrnarse & Mahducht; Ailred of Rievaulx; Antony Fournier; Antony Mary Pucci; Arcadius (martyr); Bartholomew Alvarez; Benedict Biscop; Bernard of Corleone; Bernard of Sicily; Caesaria; Emmanuel de Abrou; Ferjus of Grenoble: John Caspar Kratz; John Horden; Marguerite Bourgeoys; Martin of Leon; Peter Francis Jamet; Tatiana; Thomas of Cori; Tigrius and Eutoprius; Victorian of Asan; Vincent da Cunha;
January 13 edit
Abselama; Agnitus of Trier; Agricius of Treves; Berno, Abbot of Cluny; Dominic Kahm, Lucy Thin and Joseph Ta; George Fox; Godfrey of Kappenburg; Gumesindus and Serevusdei; Hermylus and Stratonicus; Hilary of Poitiers; Jutta of Huy; Maximos Kafsokalyvitis; Saint Mungo; Saint Remigius; Veronica of Binasco; Vincent the Presbyter;
January 14 edit
Adam; Adam of Mt. Sinai; Agnes; Anthony Pucci; Barbasymas; Clodia; Datius; Euphrasius of Auvergne; Felix of Nola; Firminus of Gabales; Fulgentius of Écija; Giles of Lorenzana; Glycerius the martyr; Hilary of Poitiers; Kentigern; Macrina the Elder; Maria Rivier; Martyrs of Mount Sinai; Saint Mungo; Odo of Navara; Odoric of Pordenone; Peter Donders; Roger of Todi; Saint Nino; Saint Sava; Saint Sava II; Abbot Stephen of Constantinople; 38 Fathers of Mount Sinai;
January 15 edit
Abelbert of Cambrai; Abelbertus; Abeluzius; Absolon; Anba Lucius; Angelo of Gualdo; Arnold Janssen; Bonitus of Clermont; Ceolwulf; Cosmas of Maimua; Epidius of Aversa; Francis Ferdinand de Capillas; Isidore of Alexandria; Saint Ita: James the Almsgiver; John Calybites; Martin Luther King Jr.; Laudatus; Macarius of Egypt; Malard of Chartres; Saint Maurus; Paul of Thebes; Pierre de Castelnau; Probus of Rieti; Richard Meux Benson; Romedius; Tarsicia of Uzès;
January 16 edit
Accursius; Achatius the Centurion; Adjutus; Agathius the Centurion; Berard of Carbio; Chains of Saint Peter; Damaskenos; Ferreolus of Grenoble; Saint Fursey; Gonsalo of Armarante; Henry of Cocket; Honoratus of Arles; Marcellus; Priscilla;
January 17 edit
Achillas; Anthony the Great; Antony of Egypt; Charles Gore; Genulf; George of Ioannina; Julian Sabas; Mildgyth; Pachomius; Peter and Paul and the Four Evangelists; Richimus; Rogation of Ninevites; Rseline; Sabinus of Piacenza; Speusippus, Eleusippus, and Meleusippus; Sulpitius the Pious;
January 18 edit
Aedhan; Agatho; Athanasius of Alexandria; Bathan; Beatrice d'Este of Ferrara; Chair of Saint Peter; Christina of Aquila; Confession of Peter; Deicolus; Saint Margaret of Hungary; Saint Prisca; Volusian; Day 1 of Week of Prayer for Christian Unity;
January 19 edit
Abachum; Absadah; Abundus; Abundus of Ossuna; Agricius of Treves; Albert of Cashel; Andrew of Peschiera; Bernard of Corleone; Canute IV of Denmark; Charles de Sezze; Fillan; Germanicus; Bishop Henry; James Sales; Marguerite Bourgeoys; Maris, Martha, Abachum and Audifax; Mark of Ephesus; Nathalan; Saint Abundantia; Thomas of Cori; Timket; Day 2 of Week of Prayer for Christian Unity; William of Saultemouche; Wulfstan, Bishop of Worcester;
January 20 edit
Abadios; Agnes; Benedict of Coltiboni; Desiderius of Therouanne; Bishop Henry; Euthymius the Great; Pope Fabian; Fechin; Richard Rolle; Saint Sebastian; Thursday of Thanksgiving; Day 3 of Week of Prayer for Christian Unity;
January 21 edit
Saint Agnes; Alban Roe; Altagracia; Clodia; Edward Stransham; Epiphanius of Pavia; Fructuosus; Josepha of Beniganim; Maximus the Confessor; Meinrad of Einsiedeln; Neophytus; Patroclus; Saint Stephen; Thomas Reynolds; Day 4 of Week of Prayer for Christian Unity;
January 22 edit
Agnes of Benigamin; Anastasius of Persia; Berhtwald of Ramsbury; Blesilla; Dominic of Sora; Joseph Freinademetz; Timothy; Vincent of Saragossa; Vincent Pallotti; Day 5 of Week of Prayer for Christian Unity; William Patenson;
January 23 edit
Abakuh; Abba Chao; Abbakuh; Acauhi; Addaeus; Addai; Agathangelus; Apa Pamun; Asclas; Bernard of Vienne; Clement and Agathangelos; Emerentiana; Ildefonsus; John the Merciful; Apa Kauh; Lufthildis; Maimbod; Margaret of Ravenna; Raymond of Penafort; Day 6 of Week of Prayer for Christian Unity;
January 24 edit
Agapius; Babylas of Antioch; Felician of Foligno; Francis de Sales; Macedonius; Marcolino of Forli; Paphserios, Theodotion and Paul; Timothy; Day 7 of Week of Prayer for Christian Unity; William Ireland; Xeni; Xenia of Petersburg; Xenia of Rome
January 25 edit
Acha; Acolythus; Advent; Adwen; Aedh of Lisgool; Agape; Mar Aha; Ananias of Damascus; Apollo; Artemas; Athwenna; Conversion of Paul; Dwyn; Gregory of Nazianzus; Juventinus and Maximinus; Praejectus of Clermont; Puplios the Ascetic; Day 8 of Week of Prayer for Christian Unity;
January 26 edit
Alberic of Citeaux; Conan; Eysteinn Erlendsson; Margaret of Hungary; Saint Paula; Polycarp; Timothy; Apostle Titus; Timothy, Titus, and Silas; Valerius of Saragossa; Xenophon, Maria, John and Arkadios;
January 27 edit
Adjutus; Angela Merici; Avitus; Demetrios of Constantinople; Devote; Henry de Osso y Cervello; John Chrysostom; John of Warneton; Julian of Le Mans; Lydia, Dorcas, and Phoebe; Marius; Pope Vitalian;
January 28 edit
Achebran; Acobran; Adjutor; Aedh Corhbran; Aedh Kevern; Aedhlug; Aegydius of Lanrenzana; Aemilianus of Trevi; Agathangelus; Pope Agatho; Agnes; Amadeus of Lausanne; Antony of Amandola; Charlemagne; Clodia; Ephrem the Syrian; James the Almsgiver; John Reomay; John the Sage; Julian Maunoir; Mary of Pisa; Palladios; Paulinus of Aquileia; Saint Pedro Nolasco; Peter Thomas; Syriac and Greek fathers; Thomas Aquinas; Valerius of Saragossa;
January 29 edit
Abibus; Agabus; Demetrios of Chios; Francis de Sales; Gildas; Philotheos; Romanus of Samosata; Sabian; Sulpitius the Pious;
January 30 edit
Adelemus; Adelundis of Maubeuge; Agrippinus of Alexandria; Aldegundis of Maubeuge; Aleaume of Burgos; Balthild; Mar Benyamin and Shimunite Patriarchs; Bersimaeus; Charles I of England; Elesme of Burgos; Hippolytus of Rome; Hyacintha Mariscotti; Martina; Sebastian Valfré; Thomas Estaban; Three Hierarchs Basil the Great, Gregory of Nazianzus, and John Chrysostom;
January 31 edit
Adamnan of Coldingham; Ado; Aedan of Ferns; Cyrus and John; Elias the New; Eusebius; Francis Bianchi; John Bosco; Marcella; Nicetas; Paula Gambara-Costa; Peter John Cayron; Ulphia;