| January | 1 St. Cuan | ||||||
| 3 St. Munchin, abbot, Limerick diocese, 7th century | |||||||
| 4 St. Aedh Dubh | |||||||
| 5 St. Cera | |||||||
| 7 St. Cronan Beg | |||||||
| 8 St. Albert of Cashel | |||||||
| 11 St. Boadin | |||||||
| 11 St. Brandan | |||||||
| 15 St. Ita | |||||||
| 15 St. Blaithmaic or Blathmac | |||||||
| 28 St. Cannera | |||||||
| 29 St. Blath | |||||||
| 31 St. Aidan or Edan, bishop, Ferns diocese, 632 | |||||||
| 31 St. Aedan or Edan | |||||||
| 31 St. Adamnan of Coldingham | |||||||
| February | |||||||
| 1 St. Brigid of Kildare | |||||||
| 1 St. Cinnia of Ulster | |||||||
| 1 St. Crewanna | |||||||
| 1 St. Darlaugdach | |||||||
| 1 St. Jarlath | |||||||
| 1 St. Kinnia | |||||||
| 2 St. Columbanus | |||||||
| 3 St. Caellainn | |||||||
| 4 St. Modan | |||||||
| 5 St. Buo | |||||||
| 5 St. Fingen | |||||||
| 5 St. Indract and Domnica | |||||||
| 6 St. Mel | |||||||
| 7 St. Meldon | |||||||
| 7 St. Mun | |||||||
| 8 St. Oncho | |||||||
| 9 St. Alto | |||||||
| 9 St. Cronan the Wise | |||||||
| 9 St. Cuaran | |||||||
| 9 St. Eingan | |||||||
| 9 St. Marianus | |||||||
| 11 St. Ecian, Bishop in Ireland | |||||||
| 11 St.Gobnata (Gobnet) | |||||||
| 12 St. Siadhal | |||||||
| 13 St. Modomnoc O'Neil | |||||||
| 15 St. Berach | |||||||
| 15 St. Farannan | |||||||
| 17 St. Finan of Iona | |||||||
| 19 St. Baithen of Iona | |||||||
| 19 St. Odran | |||||||
| 20 St. Bolcan | |||||||
| 20 St. Colgan | |||||||
| 24 St. Cumine | |||||||
| 27 St. Comgan | |||||||
| 28 St. Ermina | |||||||
| 28 St. Sillian of Bangor | |||||||
| March | 1 St. Marnock | ||||||
| 2 St. Chad | |||||||
| 2 St. Foila (Faile) of Galway, Virgin | |||||||
| 2 St. Fergna (Ferona) | |||||||
| 2 St. Slebhene | |||||||
| 3 St. Sacer | |||||||
| 4 St. Adrian | |||||||
| 5 St. Carthach | |||||||
| 5 St. Kieran of Seirkeiran. Ossory diocese. circa 545 | |||||||
| 5 St. Piran | |||||||
| 6 St. Baldrid | |||||||
| 6 St. Balther | |||||||
| 6 St. Bilfrid | |||||||
| 11 St. Aengus | |||||||
| 12 St. Mura McFeredach | |||||||
| 12 St. Diomma of Kildimo, County Limerick | |||||||
| 16 St. Abban | |||||||
| 17 St. Patrick, Patron Saint of Ireland | |||||||
| 18 Bl. Christian O'Conarchy | |||||||
| 19 St. Lactan (Lactinus) of Freshford | |||||||
| 20 St. Cuthbert | |||||||
| 21 St. Darerca | |||||||
| 21 St. Enda | |||||||
| 21 St. Failbhe of Iona | |||||||
| 21 St. Trien | |||||||
| 23 St. Maidoc | |||||||
| 24 St. Macartan, bishop. Clogher diocese. circa 505 | |||||||
| 24 St. Caimin | |||||||
| 24 St. Cairlon | |||||||
| 24 St. Domangard | |||||||
| 26 St. Garbhan | |||||||
| 26 St. Mochelloc of Kilmallock | |||||||
| 26 St. Sincheall | |||||||
| 27 St. Suairlech of Fore | |||||||
| 28 St. Tuethal | |||||||
| 29 St. Lasar | |||||||
| 30 St. Fergus | |||||||
| 30 St. Tola | |||||||
| April | 1 St. Cellach | ||||||
| 1 St. Caidoc & Fricor | |||||||
| 2 St. Bronach | |||||||
| 4 St. Tigernach of Clogher, Bishop | |||||||
| 5 St. Becan | |||||||
| 6 St. Berthanc | |||||||
| 7 St. Brynach | |||||||
| 7 St. Celsus | |||||||
| 7 St. Finan | |||||||
| 10 St. Paternus | |||||||
| 11 St. Laserian, abbot. Leighlin diocese | |||||||
| 11 St. Machai of Bute | |||||||
| 11 St. Maedhog | |||||||
| 14 St. Tassach of Raholp | |||||||
| 15 St. Ruadan | |||||||
| 16 St. Elias | |||||||
| 17 St. Donnan | |||||||
| 18 St. Bitheus and St. Genocus | |||||||
| 18 St. Cogitosus of Kildare | |||||||
| 18 St. Laserian, abbot. Leighlin diocese. 639 | |||||||
| 20 St. Gundebert | |||||||
| 21 St. Maelrubha | |||||||
| 22 St. Rufus | |||||||
| 23 St. Ibar | |||||||
| 25 St. Macaille of Croghan | |||||||
| 25 St. Maughold of Man | |||||||
| 25 St. Mella of Doire-Melle | |||||||
| 26 St. Trudpert | |||||||
| 27 St. Assicus (or Tassach) bishop. Elphin diocese. 470. | |||||||
| 28 St. Cronan of Roscrea | |||||||
| 28 St. Probe and Germaine, Virgin Martyrs | |||||||
| 29 St. Fiachan (Fiachina, Fianchne) of Lismore | |||||||
| 29 St. Dichu of Ulster | |||||||
| 30 St. Forannan, Abbot | |||||||
| May | 1 St. Ceallach (Kellach) of Killala, Bishop | ||||||
| 3 St. Scannal | |||||||
| 4 St. Conleth | |||||||
| 8 St. Gibrian | |||||||
| 8 St. Catald (also known as Cataldus, Cathaluds, Cattaldo, Cathal) of Taranto (Tarentum), Bishop | |||||||
| 8 St. Abran | |||||||
| 8 St. Odrian | |||||||
| 9 St. Sanctan of Kill-da-Les | |||||||
| 10 St. Cataldus | |||||||
| 10 St. Comgall of Bangor, abbot. Down diocese. 602 | |||||||
| 11 St. Aid of Achad-Finglas | |||||||
| 11 St. Credan | |||||||
| 11 St. Lua of Killaloe | |||||||
| 12 St. Wigbert | |||||||
| 13 St. Abban | |||||||
| 14 St. Carthagh. Lismore diocese. 637 | |||||||
| 14 St. Tassach of Raholp | |||||||
| 16 St. Brendan, "the Navigator". Ardfert and Clonfert dioceses. 577 | |||||||
| 15 St. Dympna (Dymphna, Dympne) of Gheel, Virgin & Martyr | |||||||
| 15 St. Gerebernus | |||||||
| 21 St. Barrfoin | |||||||
| 22 St. Boethian | |||||||
| 26 St. Becan | |||||||
| June | |||||||
| 2 St. Adalgis | |||||||
| 3 St. Kevin. Glendalough diocese. 618. | |||||||
| 4 St. Breaca | |||||||
| 4 St. Buriana | |||||||
| 4 St. Cornelius | |||||||
| 6 St. Jarlath, Tuam diocese. circa 550 | |||||||
| 7 Colman, Dromore Diocese. 6th century | |||||||
| 8 St. Bron | |||||||
| 8 St. Killian | |||||||
| 9 St. Columba, Abbot | |||||||
| 9 St. Cummian | |||||||
| 14 St. Cearan | |||||||
| 17 St. Adulf | |||||||
| 21 St. Corbmac | |||||||
| 25 St. Adalbert | |||||||
| 26 St. Corbican | |||||||
| 27 St. Richard Fitzralph of Dundalk. Archbishop of Armagh, reformer. 1360 | |||||||
| 28 St. Crummine | |||||||
| July | |||||||
| 1 St. Oliver Plunkett, Bishop & Martyr | |||||||
| 1 St. Servan | |||||||
| 3 St. Cillene | |||||||
| 3 St. Guthagon | |||||||
| 3 St. Rumold | |||||||
| 3 St. Tirechan | |||||||
| 4 St. Finbar | |||||||
| 5 St. Edana of West Ireland | |||||||
| 6 St. Moninne of Killeavy, Armagh diocese. 518 | |||||||
| 6 St. Moninna | |||||||
| 6 St. Palladius | |||||||
| 7 St. Maelruain of Tallaght, Abbot | |||||||
| 7 SS. Medran and Odran of Muskerry | |||||||
| 8 St. Kilian, bishop and martyr. Kilmore diocese. 689 | |||||||
| 10 St. Etto of Fescau | |||||||
| 11 St. Drostan of Dalcongail | |||||||
| 12 St. Menulphus | |||||||
| 14 St. Idus of Leinster | |||||||
| 17 St. Turninus | |||||||
| 18 St. Minnborinus | |||||||
| 22 St. Movean | |||||||
| 24 St. Declan, bishop. Lismore diocese. 5th century. | |||||||
| 25 St. Nissen of Montgarth | |||||||
| 27 St. Congall of Iabnallivin | |||||||
| 27 St. Luican | |||||||
| August | 1 St. Peregrinus of Modena | ||||||
| 1 St. Rioch of Innisboffin, Abbot | |||||||
| 3 St. Senach, Bishop of Clonard | |||||||
| 3 St. Trea of Ardtee, Hermitess | |||||||
| 4 St. Lugid of Clonfert | |||||||
| 5 St. Abel | |||||||
| 5 St. Gormgal | |||||||
| 9 St. Felim. Kilmore diocese. circa 560 | |||||||
| 9 St. Crumnathy or Nathi. c.610 Achonry Diocese | |||||||
| 11 St. Attracta | |||||||
| 11 St. Lelia of Limerick | |||||||
| 13 St. Muredach, or Murtagh. c. 480 Kilalla Diocese | |||||||
| 13 St. Jeremy Taylor, Bishop of Down and Connor and Dromore. Writer. 1667 | |||||||
| 14 St. Fachtna (or Fachanan) bishop. Ross diocese. 6th century. | |||||||
| 15 St. Maccarthen of Clogher | |||||||
| 16 St. Charles Inglis, bishop. 18th century. | |||||||
| 17 St. Hiero | |||||||
| 18 St. Daig of Iniskin | |||||||
| 19 St. Mochta of Louth | |||||||
| 21 St. Moghtewe, Abbot in Ireland | |||||||
| 22 St. Andrew the Scot | |||||||
| 23 St. Eugene of Tyrone | |||||||
| 24 St. Patrick the Elder | |||||||
| 25 St. Michan of Dublin | |||||||
| 30 St. Loaran | |||||||
| September | 1 St. Fiacre | ||||||
| 1 St. Finnian of Clonard | |||||||
| 3 St. Balin | |||||||
| 3 Oengus Mac Nisse of Dalriada. Connor diocese. 514 | |||||||
| 4 St. Monessa of Ireland | |||||||
| 4 St. Ultan of Ardbraccan | |||||||
| 6 St. Bega | |||||||
| 6 St. Maccallin of Lusk | |||||||
| 7 St. Grimonia | |||||||
| 7 Bl. Ralph Corby | |||||||
| 9 St. Ciaran of Clonmacnois. circa 545 | |||||||
| 10 St. Finnian of Moville in the Ards. Down diocese. 579. | |||||||
| 12 St. Ailbhe | |||||||
| 14 St. Cormac | |||||||
| 15 St. Mirin | |||||||
| 17 St. Brogan | |||||||
| 23 Eunan, Abbot. Raphoe diocese. 7th century | |||||||
| 23 St. Adamnan | |||||||
| 24 St. Chuniald & Gislar | |||||||
| 25 Fin Barre. Cork diocese. 623 | |||||||
| October | |||||||
| 6 St. Cummian the White | |||||||
| 7 St. Dubtach of Armagh | |||||||
| 8 St. Aidan, monk, Iona | |||||||
| 11 St. Canice, bishop. Ossory diocese. 6th century | |||||||
| 12 St. Fiech of Sletty | |||||||
| 12 St. Móibhí, Teacher. 545. | |||||||
| 13 St. Comgan of Lochalsh | |||||||
| 14 St. Bernard of Arce | |||||||
| 16 St. Gall, missionary Down diocese. 630 | |||||||
| 16 St. Kiara | |||||||
| 17 St. Colman of Kilroot | |||||||
| 26 St. Bean | |||||||
| 27 St. Abban of Murnevin | |||||||
| 27 St. Otteran, abbot. Waterford diocese. 563 | |||||||
| November | |||||||
| 2 St. Maura | |||||||
| 3 St. Malachy, bishop. Armagh and Down dioceses. 1148 | |||||||
| 9 St. Benignus or Benen | |||||||
| 10 St. Aedh MacBricc | |||||||
| 12 St. Cummian Fada | |||||||
| 13 St. Chillien | |||||||
| 14 St. Laurence O'Toole. Dublin and Glendalough dioceses. 1180 | |||||||
| 15 St. Fintan | |||||||
| 18 St. Constant | |||||||
| 18 St. Momble of Lagny | |||||||
| 19 St. Ronan | |||||||
| 19 St. Medana | |||||||
| 20 St. Autbodus | |||||||
| 23 Columbanus, abbot. Down diocese. 615 | |||||||
| 24 Colman. Cloyne diocese. 601. | |||||||
| 24 St. Cianan (Kenan), Bishop of Duleek in Ireland | |||||||
| 25 St. Columbanus | |||||||
| 20 St. Brendan of Birr | |||||||
| December | |||||||
| 5 St. John Almond | |||||||
| 6 St. Auxilius | |||||||
| 7 St. Buithe of Monasterboice | |||||||
| 9 St. Budoc | |||||||
| 12 St. Finnian of Clonard | |||||||
| 12 St. Columba of Tyrdaglas | |||||||
| 12 St. Cormac | |||||||
| 16 St. Beoc | |||||||
| 18 St. Flannan. Killaloe diocese. 640. | |||||||
| 24 St. Mochua of Timahoe | |||||||
| 29 St. Aileran | |||||||