| Saint | Background | Date | Feast Day |
| Cadfan | Abbot of Bardsey Island | C6th | 01/11 |
| Cadfarch | Montgomery | C6th | 24/10 |
| Cadoc/Cadog | Bishop of Llancarvan | C6th | 24/01, 25/09 |
| Cadroe(l) | Armagh | d976 | 06/03 |
| Cadwaladr | King of Wales | d c680 | 12/11 |
| Caedmon | monk at Whitby | C7th | 11/02 |
| Caedwalla (Peter) | King of Wessex | 20/04 | |
| Caelfind | 03/02 | ||
| Caellainn | virgin, Ireland | 03/02 | |
| Caesaria | Abbess, sister of Caesarius of Arles | C6th | 12/01 |
| Caesarius | 25/02, 28/11 | ||
| Caesarius | of Arles | d543 | 26/08 |
| Cagnoald | Bishop of Laon | 04/09 | |
| Caian | Anglesey, Wales, son of St Brychan | 25/09 | |
| Caidin | Ireland | 25/10 | |
| Caimin | Abbot of Lough Derg | 24/03 | |
| Cairbre | 01/11 | ||
| Cairbre | 03/05 | ||
| Cairbre | 06/03 | ||
| Cairbre | 11/11 | ||
| Cairell | of TÍ r RÙ is | 13/06 | |
| Caius, Faustus, Eusebius, Lucius + comps | 04/10 | ||
| Caius | Pope | 22/04 | |
| Cajetan | of Thienna, priest in Vicenza | d1547 | 07/08 |
| Calais | Abbot of Ancille | 01/07 | |
| Caleb | 27/10 | ||
| Caletricus | Bishop of Chartres | 07/10, 04/09 | |
| Calliope | 08/06 | ||
| Callistus I | Pope | d222 | 14/10 (03/03, 11/08, 16/04) |
| Callistus | of Huesca | 15/10 | |
| Calminus | Duke of Aquitaine | 19/08 | |
| Calogerus + Parthenius | Martyrs | 19/05 | |
| Camelianus/Himerius | Bishop of Troyes | 28/07 | |
| Camilla | 03/03, 31/05 | ||
| Camillus de Lellis | Founder, Ministers of the Sick (Camellians) | 1550-1614 | 14/07 |
| Cammin | 25/03 | ||
| Candida | the Elder, Naples | C1st | 04/09 |
| Candida | the Younger | 10/09 | |
| Candida/Gwen/Whyte/Wite/Blanche | of Brittany, martyr, Whitchurch Canonicorum | C7th | 01/06 (01/12, 02/12, 16/12, 28/08) |
| Candidus + Malulfus | Bishops of Senlis | 04/05 | |
| Candidus | 02/12, 04/10 | ||
| Candidus | of Rome | 03/10 | |
| Candidus | Martyr | (Translation) 23/05 | |
| Canna, Saudren + Crallo | Wales | 25/10 | |
| Cannatus | Bishop of Marseilles | 15/10 | |
| Canog | son of St Brychan | 07/10 | |
| Cantius, Cantianus, Cantianilla + Protus | 31/05, 01/04 | ||
| Canute see Kanute | |||
| Caoimhe/Keeva | of Killeavy | 03/11, 02/11 | |
| Caoimhghin/Coemgen(us)/ Kevin/Keven | Abbot of Glendalough | d 618 | 03/06 |
| Caoimhghin | Ireland | 11/05 | |
| Caoimhghin | Ireland | 16/10 | |
| Caolan | Ireland | 19/06 | |
| Caolan | Ireland | 25/07 | |
| Caolan | Ireland | 25/09 | |
| Caolan | Ireland | 29/07 | |
| Caolan | Ireland | 29/10 | |
| Caolan | Ireland | 30/06 | |
| Caolan | Ireland | ||
| Caomhan | Ireland | 03/11 | |
| Caomhan | Ireland | 07/06 | |
| Caomhan | Ireland | 12/06 | |
| Caomhan | Ireland | 13/03 | |
| Caomhan | Ireland | 14/02 | |
| Caomhan | Ireland | 14/03 | |
| Caomhan | Ireland | 14/08 | |
| Caomhan | Ireland | 14/09 | |
| Caomhan | Ireland | 16/09 | |
| Caomhan | Ireland | 16/10 | |
| Caomhan | Ireland | 18/03 | |
| Caomhan | Ireland | 18/12 | |
| Caomhan | Ireland | 22/02 | |
| Capitolinia + Erotheis | 27/10 | ||
| Capiton/Kapiton | Missionary in Russia & Crimea | C4th | |
| Caprais | 01/06 | ||
| Caprasius | of Agen | 20/10 (06/10) | |
| Caradoc/Caradog | St David's | C12th | 14/04 |
| Caran | 23/12 | ||
| Carannog | Wales | C6th | 16/05 |
| Carantoc | of Carhampton, Abbot of Llangranog | 16/05 | |
| Caranus | Bishop in East Scotland | 24/12 | |
| Caraunus | Martyr, Chartres | 28/05 | |
| Carileffus | 01/07 | ||
| Carina + comps | 07/11 | ||
| Carissima | 07/09 | ||
| Carissimus + Dulcissimus | 19/04 | ||
| Carloman, Blessed | Son of Charles Martel | 707-55 | |
| Carmen | see BV Mary, Our Lady of Mt Carmel/Carmen | 16/07 | |
| Carponius | 28/08 | ||
| Carponius, Evaristus + Priscian | 14/10 | ||
| Carpophorus + Abundantius | 10/12 | ||
| Carpus | 13/04 | ||
| Carterius | 01/02 | ||
| Carthach | Ireland | 05/03 | |
| Carthach | Ireland | 26/03 | |
| Carthage/Carthagh | the Younger, Bishop of Lismore/Kierraigh | d637 | 14/05 |
| Casadoe, Dadas + Gaboelas | 29/09 | ||
| Casaria | 04/02 | ||
| Casaria | Virgin | 08/05, 09/12 | |
| Casilda | Moorish princess | 09/04 | |
| Casimir | prince of Poland | 1461-1484 | 04/03 |
| Caspar, Balthazar + Melchior | The Magi/Kings/ Wise Men who visited Jesus | 06/01 (Epiphany/ Twelfth Night) | |
| Caspar del Bufalo | founder, 'Congregation of the Most Precious Blood' | 1786-1836 | 02/01 |
| Cassian | of Imola | 13/08 | |
| Cassian(us) | of Tangier | C3rd | 03/12 |
| Cassius + Victorinus | Martyrs | 16/05 | |
| Cassius, Florentius + Malusius | 10/10 (Translation 02/05) | ||
| Castor | 04/02, 13/02 | ||
| Castor | Bishop of Apt | 21/09 | |
| Castorius | one of the Four Crowned Martyrs stonecarvers, martyrs at Sirmium | c 306 | 08/11 |
| Castulus | martyr, Rome | d286 | 26/03 (27/03) |
| Castus + Aemilius | 22/05 | ||
| Casyon/Cassianus | Bishop of Autun | 04/08 | |
| Catald | of Ireland, Bishop of Tarentum | 08/05 | |
| Cathan/Kane | (Bishop of Bute) | C6th | 17/05 |
| Catherine (Alexandrina) de Ricci | prioress in Tuscany | 1522-89 | 13/02 |
| Catherine (Zoe) Lebour¾ | nun in Paris | 1806-76 | 28/11 |
| Catherine | 02/02, 06/04, 31/12 | ||
| Catherine Mattei | 04/09 | ||
| Catherine | of Alexandria, virgin martyr | C4th | 25/11 (Translation 05/07) |
| Catherine de Vigri | of Bologna, nun in Ferrara & Bologna | 1413-63 | 09/03 |
| Catherine | of Genoa | 14/09, 15/09 | |
| Catherine | of Palma | C13th | 01/04 |
| Catherine | of Siena, nun | c 1347-80 | 29/04 (orig. Apr 30) |
| Catherine | of Sweden, dau Bridget, superior at Vadstena | c1330-81 | 24/03 (22/03, 02/08) |
| Catuldus/Cathal/Catald | of Munster, Bishop of Taranto | C7/8th | 10/05 |
| Cawrdaf | of Wales | 05/12 | |
| Ceallach/Cellach | Bishop of Killala, Ireland | 01/05 | |
| Ceallach/Celsus McAedh | Bishop of Armagh | d1129 | 07/04 (01/04) |
| Ceallach | Ireland | 07/10 | |
| Ceallach | Ireland | 18/07 | |
| Ceallachan | Ireland | 22/04 | |
| Ceallachan | Ireland | 24/09 | |
| Cecil(ius) | 03/06 | ||
| Cecilia/Cecily/Celia | virgin martyr | C2nd | 22/11 |
| Cedd | of Lindisfarne, Bishop of London/the East Saxons | d664 | 07/01, 26/10 |
| Ceitho | Cardiganshire, One of Five Brothers | 01/11 | |
| Celestine | 27/07 | ||
| Celestine V | Pope | 19/05 | |
| Celestine I | Pope | 06/04 (07/04) | |
| Celestinus | 03/06 | ||
| Celine/Celinia/Cilinia | of Lyons, mother of Remigius | d c458 | 21/10 |
| Celsus | 23/02 | ||
| Celsus | boy martyr | 27/07 | |
| Censurius | Bishop of Auxerre | 10/06 | |
| Ceolfrid/Ceolfrith (Geoffrey) | Abbot of Wearmouth/Jarrow | 25/09 (Translation 08/10) | |
| Ceollach | Bishop of the Mercians | 06/10 | |
| Ceolwulf | King, monk of Lindisfarne | 15/1 | |
| Ceratius/Cerasius | Bishop of Grenoble | C5th | 06/06 |
| Ceraunus | Archbishop of Paris | 27/09 | |
| Cerbonius | of Verona | 10/10 | |
| Cerbonius | Bishop of Populonia (Piombino) | 10/10 (16/10, 17/10) | |
| Cerneuf |
See 'Serenus' |
23/02 | |
| Ceronna | 15/11 | ||
| Cesarius | 01/11 | ||
| Ceslaus/Ceslas, Blessed | Prior of Breslau, Poland | C12th | 17/07 |
| Cessator | Bishop of Limoges | 15/11 | |
| Cettin | Bishop in Ireland | C5th | 16/06 |
| Cewydd | of Anglesey, son of Brychan | C6th | 01/07 (15/07) |
| Chad/Ceadda | Bishop of York & Lichfield | d672 | 02/03 |
| Charalambos | (Orth) 10/02 | ||
| Charbel (Joseph Makhlouf) | Maronite monk, Lebanon | 1828-98 | 24/12 |
| Charity, Faith, Hope + Sophia, their mother | Rome | C2nd (myth) | 01/08 |
| Charlemagne | 28/01 (Translation 27/07) | ||
| Charles | 10/09 | ||
| Charles Borromeo | Bishop of Milan | 1538-1584 | 04/11 |
| Charles Eugene de Foucauld, Venerable | hermit in Algeria | 1858-1916 | 13/04 |
| Charles Garnier | French Jesuit killed by Iroquois | 1648 19/10 | (26/09) |
| Charles Inglis | Bishop | C18th | 16/08 |
| Charles Joseph Eugene de Mazenod, Blessed | Bishop of Marseilles | 1782-1861 | 21/05 |
| Charles Lwanga + 21 comps | Martyrs of Uganda | d 1886 | 03/06 |
| Charles | of Blois | 29/09 | |
| Charles (John Charles Marchioni) | of Sezze, monk near Rome | C17th | 05/01 (07/01) |
| Charles the Good, Blessed | Count of Flanders | d1127 | 02/03 |
| Charlotte | 24/07 | ||
| Chlodesindis | Virgin | 25/07 | |
| Chlodulph | Bishop of Metz | 08/06, 11/12 | |
| Christian O'Conarchy (Giolla Criost Ua Condoirche), Blessed | Abbot of Mellifont, Ireland | C12th | 18/03 |
| Christian | of Markyate | 05/12 | |
| Christian | Bishop of Clogher | C12th | 12/06 |
| Christiana | 15/12 (04/01) | ||
| Christicola | Bishop of Leinster | 03/03 | |
| Christina Ciccarelli | 18/01 | ||
| Christina the Astonishing | b 1150 24/07 | ||
| Christine | virgin martyr | 19/07 | |
| Christine/Charitine/Charitina | 05/10 | ||
| Christopher | 01/03, 01/10, 04/03 | ||
| Christopher | Lycia | C3rd | 25/07 |
| Christopher | New Testament | 25/07 | |
| Chrodegang | Bishop of Metz | 06/03 | |
| Chrodegang/Godegrand | Bishop of Séez | 03/09 | |
| Chromatius | 02/12 | ||
| Chrysanthus + Daria | martyrs, Rome | d283 | 25/10, Orth 19/03 (01/12, 12/08) |
| Chrysantianus | 17/02 | ||
| Chrysogonus/Crisogonus | Martyr, Rome | C5th | 24/11 |
| Chrysolius | 07/02 | ||
| Cian/Kean | of Caernarvonshire | C6th | 11/12 |
| Cianan/Kenan | Bishop of Duleek/Damleag in Meath | d489 | 24/11 |
| Cianan | Ireland | 25/02 | |
| Cianan | Ireland | 27/11 | |
| Ciannait/Keenat | virgin, Ireland | 23/03 | |
| Ciara of Cork | 16/10 | ||
| Ciara/Cyra | of Kilkeary | d 679 | 05/01 |
| Ciaran | Ireland | 04/02 | |
| Ciaran | Ireland | 05/01 | |
| Ciaran | Ireland | 08/03 | |
| Ciaran | Ireland | 08/10 | |
| Ciaran | Ireland | 09/01 | |
| Ciaran | Ireland | 09/08 | |
| Ciaran | Ireland | 10/11 | |
| Ciaran | Ireland | 19/05 | |
| Ciaran | Ireland | 19/07 | |
| Ciaran | Ireland | 24/02 | |
| Ciaran | Ireland | 29/09 | |
| Ciaran | Ireland | 30/04 | |
| Ciaran/Cearan | the Devout, Abbot of Bellach-Duin, Meath | 14/06 | |
| Ciaran/Kieran | Of Saighir/Seirkeiran, Bishop of Ossory | d c547 | 05/03 |
| Ciaran/Kieran | (the Younger), Abbot of Clonmacnoise | d549 | 09/09 |
| Ciaus | of Milan | 27/09 | |
| Cillian | Ireland | 03/01 | |
| Cillian | Ireland | 03/03 | |
| Cillian | Ireland | 07/08 | |
| Cillian | Ireland | 08/01 | |
| Cillian | Ireland | 10/04 | |
| Cillian | Ireland | 12/03 | |
| Cillian | Ireland | 12/04 | |
| Cillian | Ireland | 16/01 | |
| Cillian | Ireland | 23/10 | |
| Cillian | Ireland | 24/10 | |
| Cillian | Ireland | 26/05 | |
| Cillian | Ireland | 28/12 | |
| Cillian | Ireland | 31/08 | |
| Cillian/Cillene | Abbot of Iona | 03/07 | |
| Cillian/Kilian | 29/07 | ||
| Cillian/Killian | 13/11 | ||
| Cillian/Killian/Kilian (+ comps Olman + Totnam) | Bishop of Kilmore, missionaries to Franconia, martyred at Wurtzburg | d 689 | 08/07 (Advent 25/03) |
| Ciriaca + Juliata (Quiricus + Julitta) | 15/07 | ||
| Ciss(i)a | of Northumbria | C8th | 23/09 |
| Clare/Clara Agolanti, Blessed | of Rimini | 10/02 | |
| Clare | 13/12, 17/04 | ||
| Clare | of Assisi | c1194-1253 | 11/08 (orig 12/08 Translation 02/10) |
| Clare | of Montefalco, Abbess of Holy Cross | c1268-1308 | 17/08 (18/08) |
| Clarence | 25/04 | ||
| Clarus | 18/07 | ||
| Clarus | Bishop | 05/05 | |
| Clarus | Bishop of Lectoure | 01/06 (Translation 29/05) | |
| Clarus | Bishop of Nantes | 10/10 | |
| Clarus/Clare | Abbot of St Marcellus, Vienne | C7th | 01/01 (02/01) |
| Clarus/Clare/Clerc | (bRochester) hermit priest near Rouen | 04/11 05/11 | |
| Claud | 25/02 | ||
| Claude de la Colombiere | 15/02 (14/02) | ||
| Claudia | 18/05 | ||
| Claudia | martyr (mother of Pope Linus) | C1st | 07/08 (05/08) |
| Claudian | 05/04 | ||
| Claudianus | 06/03 | ||
| Claudius | Russia | 04/04 | |
| Claudius + comps | 03/12 07/07 08/07 | ||
| Claudius | 03/06, 12/08 | ||
| Claudius, Asterius, Neon, Domnina, + Theonilla | 23/08 | ||
| Claudius/Claude | Bishop of Besançon | d699 | 06/06 |
| Clelia Barbieri | 1847-70 | 13/07 | |
| Clement | 15/03 | ||
| Clement I | Pope, martyr | C1st | 23/11 |
| Clement | of Alexandria | 04/12 | |
| Clement + Agathangelus | of Ancyra | 23/1 | |
| Clement + comps | of Okhrida | 17/07 | |
| Clement | of Volterra | 05/06 | |
| Clement Slovensky | 27/07 | ||
| Clement | Bishop of Metz | 23/11 (Translation 02/05) | |
| Clementine | 14/01 | ||
| Cleophas | Disciple of Jesus | 25/09 | |
| Clerus | of Antioch | 07/01 | |
| Clether | of Cornwall | C6th | 04/11 |
| Cletus | Pope | d cAD 91 | 26/04 (12/10, 12/07) |
| Clodonius | 10/03 | ||
| Clotilda/Chlothildis | wife of King Clovis | 474-545 | 03/06 |
| Cloud/Chlodoald | gs of Clovis | d c560 | 07/11 (20/02, 07/09) |
| Clydog | 03/11 | ||
| Cocca | virgin, Kilcock, Ireland | 06/06 | |
| Cocha | Abbess of Ross-Benchuir | 29/06 | |
| Coelestius | Bishop of Metz | 14/10 | |
| Cogitosus | 'the thinker' of Kildare | 18/04 | |
| Cognoganus | Bishop of Quimper | 15/10 | |
| Coinneach/Cainnech/Canice/Kenneth/Kenny | Abbot of Kilkenny, Ossory | d c600 | 11/10 |
| Coinneach | Ireland | 23/01 | |
| Coinneach | Ireland | 31/01 | |
| Colentin | 12/12 | ||
| Colette (Nicolette Boilet) | reformer of Poor Clares | 1381-1447 | 06/03 |
| Colgan | Abbot of Clonmacnoise | 20/02 | |
| Collen/Colan | Denbighshire | C6th | 21/05 |
| Colloquil | King | 16/03 | |
| Colm | 01/03 | ||
| Colm | 01/08 | ||
| Colm | 01/10 | ||
| Colm | 02/09 | ||
| Colm | 04/06 | ||
| Colm | 06/02 | ||
| Colm | 06/09 | ||
| Colm | 08/11 | ||
| Colm | 11/12 | ||
| Colm | 14/10 | ||
| Colm | 15/05 | ||
| Colm | 16/10 | ||
| Colm | 22/09 | ||
| Colm | 29/09 | ||
| Colman | 01/01 | ||
| Colman | 01/06 | ||
| Colman | 01/10 | ||
| Colman | 01/11 | ||
| Colman | 02/05 | ||
| Colman | 03/09 | ||
| Colman | 03/12 | ||
| Colman | 04/04 | ||
| Colman | 04/06 | ||
| Colman | 04/10 | ||
| Colman | of Armagh | 05/03 | |
| Colman | 05/08 | ||
| Colman | 05/11 | ||
| Colman | 05/12 | ||
| Colman | 06/05 | ||
| Colman | 06/06 | ||
| Colman | 06/09 | ||
| Colman | 06/10 | ||
| Colman | 07/02 | ||
| Colman (Mocholmoc/Mocholmog) | 1st Bishop of Dromore | C6th | 07/06 (20/11) |
| Colman | 07/10 | ||
| Colman | 07/11 | ||
| Colman | 07/12 | ||
| Colman | 08/02 | ||
| Colman | 08/07 | ||
| Colman | 08/08 | ||
| Colman | 09/02 | ||
| Colman | 09/04 | ||
| Colman | 09/08 | ||
| Colman | 10/03 | ||
| Colman | 10/12 | ||
| Colman | 11/07 | ||
| Colman | 11/09 | ||
| Colman | 12/04 | ||
| Colman | 12/07 | ||
| Colman | 12/09 | ||
| Colman | Abbot of Glendalough | 12/12 | |
| Colman | 13/01 | ||
| Colman/Coloman | d Austria | C11th | 13/10 |
| Colman/Columba | Abbot of Tyrdalgas, Munster | 12/12, 13/12 | |
| Colman | 14/07 | ||
| Colman | 14/11 | ||
| Colman | 15/06 | ||
| Colman/Columban | Abbot of Oughaval | 15/05 | |
| Colman | 15/07 | ||
| Colman | 15/08 | ||
| Colman | 15/10 | ||
| Colman | 15/12 | ||
| Colmán Mac Roy | Abbot of Reachrain | 16/06 | |
| Colman | 16/09 | ||
| Colman/Colmann | Bishop of Killruadh | 16/10 | |
| Colman | Abbot of Lindisfarne, Founder of Inishbofin and Mayo | C7th | 18/02 |
| Colman | 18/05 | ||
| Colman | 18/06 | ||
| Colman | 18/08 | ||
| Colman | 18/10 | ||
| Colman | 18/12 | ||
| Colman | 19/06 | ||
| Colman | 19/07 | ||
| Colman | 19/10 | ||
| Colman | 20/05 | ||
| Colman | 20/10 | ||
| Colman | 21/02 | ||
| Colman | 21/05 | ||
| Colman | 22/01 | ||
| Colman | 22/07 | ||
| Colman | 22/09 | ||
| Colman | Bishop of Lismore | 23/01 | |
| Colman | 23/12 | ||
| Colman | 24/05 | ||
| Colman | 24/10 | ||
| Colmán | Bishop of Cloyne | d601 | 24/11 |
| Colman | 25/07 | ||
| Colman | 25/09 | ||
| Colman | 26/05 | ||
| Colman | 26/06 | ||
| Colman Elo/Colmanel | Abbot in Ireland | 26/09 | |
| Colman | 27/10 | ||
| Colman | 27/12 | ||
| Colman | 28/10 | ||
| Colman | 29/09 | ||
| Colmán MacDuach | Bishop of Connaught (of Kilmacduagh | 29/10 (03/02) | |
| Colman | 30/09 | ||
| Colman | 30/10 | ||
| Colman | 31/07 | ||
| Colman | 31/10 | ||
| Colmoc | 06/06 | ||
| Columba | of Cordova, virgin martyr | 17/09 | |
| Columba | of Cornwall, virgin martyr | C6th | 23/10 |
| Columba | the Virgin | 31/12 | |
| Columba | virgin martyr | 16/03 (Translation 28/07) | |
| Columba/Colm/Columcille/Calum | Abbot of Iona, Apostle to Scotland | c521-97 | 09/06 (Translation 17/06) |
| Columban | 28/03, 30/12 | ||
| Columban(us) | of Ireland, Abbot of Luxeuil | 23/11 (20/11, 24/10 21/11, Translation 31/08) | |
| Columban | disciple of Columban of Ireland | 21/11 | |
| Columbanus | 18/09, 19/09 | ||
| Coman | Ireland | 03/04 | |
| Coman | Ireland | 08/05 | |
| Coman | Ireland | 10/11 | |
| Coman | Ireland | 15/05 | |
| Coman | Ireland | 18/03 | |
| Coman | Ireland | 21/11 | |
| Coman | Ireland | 23/05 | |
| Coman | Ireland | 29/07 | |
| Coman | Ireland | 31/01 | |
| Comhghall | Ireland | 24/07 | |
| Comhghall | Ireland | 04/09 | |
| Comhghall | Ireland | 07/10 | |
| Comhghall | Ireland | 26/08 | |
| Comhghall | Ireland | 28/07 | |
| Comhghall | Ireland | 29/09 | |
| Comhgall/Congall | Abbot of Iabhnal-Livin | 27/07 | |
| Comhghall/Comgal/Comgal/Congall | Bishop of Bangor, Ireland | c 515-601 | 10/05 11/05 |
| Comhghan | Ireland | 02/08 | |
| Comhghan/Comgan | Abbot in Ireland | 27/02 | |
| Comhghan/Comgan/Cowan | Abbot of Lochalsh | 13/10 | |
| Comman | 26/12 | ||
| Conagen | of Quimper | 16/10 | |
| Conall | 02/03 | ||
| Conall | 02/04 | ||
| Conall | 03/03 | ||
| Conall | 09/09 | ||
| Conall | 18/03 | ||
| Conall | Abbot of Inniscoel | 22/05 | |
| Conall | 28/03 | ||
| Conall | |||
| Conan | 01/07 | ||
| Conan | Assaroe, Donegal | C6th | 08/03 |
| Conan | 12/01 | ||
| Conan | 13/02 | ||
| Conan | 16/08 | ||
| Conan | 20/03 | ||
| Conan | 26/04 | ||
| Conan | Bishop of Iona and the Isle of Man | C7th | 26/01 (27/01) |
| Concessa | Virgin | 10/05 | |
| Concord(i)us | of Spoleto | 01/01, 02/01 | |
| Concordia | 18/02 | ||
| Concordia | C3rd | 13/08 | |
| Condedus/Condede/Conde | of Fontanelle, monk | d685 | 21/10 (21/11) |
| Congar | 07/11 | ||
| Congar | Abbot, bro of Kywere | C6th | 13/02 |
| Conleth | Bishop of Kildare | 03/05 | |
| Connat | Abbess of Kildare | 01/01 | |
| Cono | the Gardener | (Orth) 05/03 | |
| Conon + his son | 29/05 | ||
| Conrad | 01/06, 14/12, 21/04 22/04, d1351 18/02 | ||
| Conrad | of Mondsee | 16/01 | |
| Conrad | of Piacenza | 19/02 | |
| Conrad | Bishop of Constance | d975 | 26/11 |
| Conran | Bishop of Orkney | 14/02 | |
| Consortia | 22/06 (Translation) 13/03 | ||
| Constans + Alexander | 05/10 | ||
| Constant | of Lough | 13/11 14/11 | |
| Constantine | 19/09 | ||
| Constantine | King of Cornwall, monk in Kintyre | d575 | 11/03 (09/03) |
| Constantine | of Aquino | 01/09 | |
| Constantine | Bishop of Gap | 12/04 | |
| Constantius | 29/01 | ||
| Constantius Bernocchi, Blessed | Dominican in Florence | C15th | 25/02 |
| Constantius | of Ancona | 23/09 | |
| Constantius/Constantine II | King of Scotland | 02/04 | |
| Contard Ferrini | d1902 | 20/10 | |
| Contestus | Bishop of Bayeux | 20/01 | |
| Convall/Conwall/Cornwall | of Scotland | 28/09 | |
| Convoyon | 05/01 | ||
| Corbican | of Ireland/Low Countries | 26/06 | |
| Corbinian(us) | 08/09, (Translation 20/11) | ||
| Corbmac | Abbot of Durrow | C6th | 21/06 |
| Corcodemus | Deacon | 04/05 | |
| Cordula | virgin martyr | 22/10 | |
| Corentin(us)/Cury | Bishop of Cornouaille (Quimper) | d c490 | 12/12 |
| Cormac | 13/12 | ||
| Cormac | 15/10 | ||
| Cormac | 24/06 | ||
| Cormac | 26/03 | ||
| Cormac | |||
| Cormac | |||
| Cormac | Abbot of Glendaloch | 12/12 | |
| Cormac | King of Munster, Bishop of Cashel | C10th | 14/09 |
| Cornelia | 31/03 (21/03) | ||
| Cornelius + Cyprianus | 14/09 | ||
| Cornelius | 26/09 | ||
| Cornelius | Pope | C3rd | 16/09 |
| Cosmas | of Aphrodisia | 10/09 | |
| Cosmas | of Majuma | 14/10 | |
| Cosmas/Cosmo + Damian | Martyrs Syria/Cilicia | 303 or 283 | 26/09 (27/09) |
| Credan | Abbot of Evesham | 19/08 | |
| Crescens | (Orth) 15/04 | ||
| Crescentia, Vitus/Guy + Modestus | martyrs, Lucania | d c303 | |
| Crewenna | the Confessor | 01/02 | |
| Crida/Creed | Princess of Leinster | C7th | 30/11 |
| Criomhthann | Ireland | 23/05 | |
| Crispin + Crispinian(us) | martyrs, Soissons | d c285/90 | 25/10 20/06 (Translation 27/06) |
| Crispin | 19/11 | ||
| Crispin II | of Pavia | 07/01 | |
| Crispina | Rome | 05/12 | |
| Crispinus + Vitalis | 20/06 | ||
| Crispus/Chrispus + Caius/Gaius | 04/10 | ||
| Crochan | Ireland | 03/08 | |
| Croidan, Medan + Degan | Cornwall | 03/06 | |
| Cronan | 01/06 | ||
| Cronan | 01/11 | ||
| Cronan | the Tanner | 03/06 | |
| Cronan | 04/05 | ||
| Cronan | 06/11 | ||
| Cronan Beg | Bishop in County Down | 07/01 | |
| Cronan | 07/08 | ||
| Cronan | 08/03 | ||
| Cronan | the Wise, Bishop in Ireland | 09/02 | |
| Cronan | 11/11 | ||
| Cronan | 12/02 | ||
| Cronan | 12/06 | ||
| Cronan | 15/12 | ||
| Cronan | 18/07 | ||
| Cronan | 19/10 | ||
| Cronan | 20/01 | ||
| Cronan | 20/02 | ||
| Cronan | 21/02 | ||
| Cronan | 22/06 | ||
| Cronan | 24/07 | ||
| Cronan | 26/02 | ||
| Cronan | 26/04 | ||
| Cronan | Abbot of Roscrea | 28/04 | |
| Cronan | 29/01 | ||
| Cronan | 30/01 | ||
| Cronan | 30/08 | ||
| Crummine | Bishop of Lackan, Westmeath | 28/06 | |
| Cuan | Abbot | 01/01 | |
| Cuan | 02/03 | ||
| Cuan | 10/07 | ||
| Cuan | 15/10 | ||
| Cuan | 29/10 | ||
| Cuaran | the Wise, Bishop of Iona | 09/02 | |
| Cucufas | 25/07 | ||
| Cuimin | 01/06 | ||
| Cuimin | 01/07 | ||
| Cuimin | 01/09 | ||
| Cuimin | 04/09 | ||
| Cuimin | 10/08 | ||
| Cuimin | 12/01 | ||
| Cuimin | 12/02 | ||
| Cuimin/Cummian | Abbot in Ireland | 12/11 | |
| Cuimin | 14/08 | ||
| Cuimin | 17/09 | ||
| Cuimin | 18/12 | ||
| Cuimin | 19/05 | ||
| Cuimin | 21/05 | ||
| Cuimin | 22/08 | ||
| Cuimin | 24/02 | ||
| Cuimin | 24/12 | ||
| Cuimin | 27/11 | ||
| Cuimin | 29/07 | ||
| Culen/Colin | King of Scotland | d971 | |
| Cumgar | of Devonshire | 02/11 | |
| Cumin | 19/08 | ||
| Cummian | of Ireland, Bishop of Bobbio | 09/06 | |
| Cummian | the White, Abbot of Iona | 06/10 | |
| Cunegund(es)/Cunigundis/Kunegundis | of Luxembourg, wife of Henry II HRE | d1040 | 03/03 (Canonization 29/03 Trans 09/09) |
| Cunera | 12/06 | ||
| Cungar/Congar | Bishop of Somerset, bro of Selyf | 27/11 | |
| Cunibert | of Maroilles | 16/09 | |
| Cunibert | Bishop of Cologne | 12/11 | |
| Curig | Bishop of Llanbadarn | 16/06 | |
| Curig/Cyric | of Ireland, Abbot of Llangurig | d550 | 17/02 |
| Cuthbert Mayne | 1544-77 | 29/11 | |
| Cuthbert(us) | Bishop of Lindisfarne | d687 | 20/03 (Translation 04/09) |
| Cuthburga | Queen, 1st Abbess of Wimborne | d c725 | 31/08 |
| Cuthman | hermit at Steyning | 08/02 | |
| Cwyfan | Wales | C6th | 07/06 |
| Cybar | 01/07 | ||
| Cybi | Abbot of Holyhead | C6th | 08/11 |
| Cyndir | gs Brychan | C6th | 08/12 |
| Cyneburg | 23/06 | ||
| Cynfarch | Wales | C6th | 08/09 |
| Cynfran | son of St Brychan | 11/11 | |
| Cynibil | bro of Chad | d679 | 02/03 |
| Cynllo | Wales | C6th | 17/07 |
| Cynwyl | bro of Deinol of Bangor | 30/04 | |
| Cyprian + Justina | 26/09 | ||
| Cyprian | 04/06, 09/12, 12/10, 14/07, 20/10 | ||
| Cyprian | Bishop of Carthage | c200-58 | 16/09 |
| Cyprian | Bishop of Toulon | 03/10 | |
| Cyria + Musca | 17/06 | ||
| Cyriacus | 16/03 | ||
| Cyriacus | Bishop of Five Churches | 01/12 | |
| Cyriacus, Largus + Smaragdus | C3rd | 08/08 | |
| Cyril (Constantine-Cyrill the Philosoph) + Methodius | c826-869 d885 | 14/02 (22/12, 09/03) | |
| Cyril + comps | 09/07 | ||
| Cyril | 06/03, 22/07, 29/1 | ||
| Cyril | Bishop of Alexandria | d444 | 27/06 (09/02, 28/01) |
| Cyril | Bishop of Jerusalem | d386 | 8/03 |
| Cyril | Martyr | 29/05 | |
| Cyrus + John | 31/1 | ||
| Cyrus + Juventius | 12/09 |
This collection of names was compiled by Kate Monk and is ©1997, Kate Monk.
Copies may be made for personal use only.