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