| Saint | Background | Date | Feast Day |
| Dacian + comps | 16/01 | ||
| Dagobert | King | 10/09 | |
| Daigh | of Inishkeen | d 587 | 18/08 |
| Dallan Forgaill | Ireland | C6th | |
| Dalmatianus | 05/12 | ||
| Dalmatius | Bishop of Rodez | 13/11 | |
| Damaskinos | of Gabrovo (Orth) | d1771 | 16/01 |
| Damasus | Pope | d384 | 11/12 |
| Damhnait/Dymp(h)na | Irish virgin martyr, Gheel, Belgium | d620 | 15/05 (13/05) |
| Damhnat/Damhnade | of Monaghan | C6th | 13/06 |
| Daniel + Verda | 21/02 | ||
| Daniel | 21/07, 03/01 | ||
| Daniel | the Stylite | d493 | 11/12 |
| Daniel, Elias, Jeremy, Isaias + Samuel | (Five Egyptian Martyrs) martyred in Caesarea | d309 | |
| Daniel, Samuel, Leo, Angelus, Domnus, Nicholas + Hugolinus | 10/10 | ||
| Daniel/Deiniol Fab | Bishop of Bangor | C6th | 23/11, 11/09 |
| Daphne | 21/05 | ||
| Darerca | sister of Pádraig | 22/03 | |
| Darlugdach | Nun under Brigid | 01/02 | |
| Dasius, Zoticus, Caius + comps | 21/10 | ||
| Datius | Bishop of Milan | 14/1 | |
| Dativus | comp of Saturninus, Africa | d309 | 11/02 |
| David (Dewi Sant) | Archbishop of Menevia, Wales | d c589 | 01/03 |
| David | 04/03, 12/07, 27/08 | ||
| David Lewis | 1616-79 | 29/12 | |
| David | of Scotland | 24/05 | |
| David | of Sweden | 15/07 | |
| David | Abbot | 25/06 | |
| David | Biblical king | 29/12, 30/12 | |
| Davinus | the Armenian, Lucca | d1051 | 03/06 |
| Declan | Bishop of Ardmore/Lismore | C5th | 24/07 |
| Decuman | of Dunster | 27/08 | |
| Deicolus | 18/1 | ||
| Deifer | Abbot of Flintshire | 07/03 | |
| Deinol/Daniel | Bishop of Bangor | 10/12 | |
| Deinol/Daniel II | Abbot of Bangor | 22/11 | |
| Delphine/Delphina | wife of St Elzear(us), Languedoc | d1360 | 09/12 (Death 26/11) |
| Demetria | 21/06 | ||
| Demetrius | of Alexandria | 09/10 | |
| Demetrius | Bishop of Gap | 26/10 | |
| Demetrius | Serbia | c300 | 08/10 |
| Demetrius | Martyr | 26/10 | |
| Denis | 06/12, 27/12 | ||
| Denis/Dionysius + comps (Rusticus, Eleuterius) | 1st Bishop of Paris | d c258/272 | 09/10 (04/12, 22/04 Octave 16/10) |
| Denis/Dionysius | one of the.Seven Sleepers of Ephesus, martyrs | c250 | 27/07 |
| Deodatus | of Sora | 27/09 | |
| Deodatus | Bishop of Vienne | 15/10 | |
| Deodatus/Didier/Die | Bishop of Nevers, Abbot of Jointures | C7th | 19/06 (20/06) |
| Deogratias | Bishop of Carthage | 22/03 | |
| Derfel Gadarn | of Llanderfel, Abbot of Bardsey | C6th | 05/04 |
| Desideratus | 30/04 | ||
| Desideratus | Bishop of Besançon | 27/07 | |
| Desideratus/Desire | Bishop of Bourges | d550 | 08/05 |
| Desiderius | Bishop | 24/05 | |
| Desiderius | Bishop of Auxerre | 19/10, 27/10 | |
| Desiderius | Bishop of Cahors | 15/11 | |
| Desiderius | Bishop of Langres | 23/05, (Translation 19/1) | |
| Desiderius | Bishop of Thérouanne | 20/1 | |
| Desiderius/Didier | Bishop of Vienne | C7th | 23/05 (01/02, 13/02) |
| Deusdedit | of Monte Cassino | 09/10 (10/08) | |
| Deusdedit/Adeodatus | Archbishop of Canterbury | 14/07 | |
| Devota | Corsica | d303 | 17/01 27/01 |
| Di(u)ma | Bishop of the Mercians & Middle Anglians | 07/12 | |
| Diaconanus | 23/12 | ||
| Diana d'Andalo, Blessed | Dominican nun in Bologna | C13th | 09/06 10/06 |
| Diarmaid | Ireland | 06/01 | |
| Diarmaid | Ireland | 08/07 | |
| Diarmaid | Ireland | 10/01 | |
| Diarmaid | Ireland | 12/10 | |
| Diarmaid | Ireland | 16/01 | |
| Diarmaid | Ireland | 20/12 | |
| Diarmaid | Ireland | 24/04 | |
| Diarmaid | Ireland | 28/09 | |
| Diamaid/Dermot | Abbot of Innis-Clotran | 18/01 | |
| Diarmuid | Ireland | 21/06 | |
| Dichu | Ulster | 29/04 | |
| Didacus | Friars Minor, Seville | d1463 | 13/11 (01/12) |
| Didymus | 22/12 | ||
| Diego Alcala | d1463 | 13/11 | |
| Diego de Avazedo, Blessed | Bishop of Osma, Spain | d1207 | 06/02 |
| Digain | Cornwall | 21/11 | |
| Digna + Merita | 23/09 | ||
| Digna | of Northumbria | C4th | 11/08 |
| Diman | Bishop of Connor | 06/01 | |
| Dimitrios | Basarbovo | d c1685 | (Orth) 27/10 |
| Dimitrios | Martyr of Sliven | d1841 | (Orth) 30/01 |
| Dingad, Cledwin + Pabiali | sons of St Brychan | 01/11 | |
| Diodorus, Diomedes + Didymus | 11/09 | ||
| Dionysia, her son Majoricus, Dativa + comps | Africa | c484 | 06/12 |
| Dionysius | 20/09 | ||
| Dionysius | of Corinth | 07/04 | |
| Dionysius | the Areopagite | 03/10, 09/10 | |
| Dionysius | the Great | 17/11 | |
| Dionysius | Bishop of Augsburg | (Translation) 26/02 | |
| Dionysius, Faustus, Caius, Peter, Paul + comps | 03/10 | ||
| Dionysius | Pope | 26/12 | |
| Dioscurus | 19/12 | ||
| Disibodus | 08/09 | ||
| Dismas | the Good Thief (Biblical) | C1st | 25/03 (26/03 24/04) |
| Divinicus/Devenick | Bishop of Caithness | 13/11 | |
| Divitianus | Bishop of Soissons | 05/10 | |
| Dochow | Wales | 15/02 | |
| Doda | virgin martyr | 28/09 | |
| Dofgan | martyr, Wales | 13/07 | |
| Dogmael/Docmael | hermit, Pembroke | C5th/6th | 14/06 |
| Domangart | Bishop of Slieve Donarth | 24/03 | |
| Domenic Spadafora | 03/10 | ||
| Dometius | the Persian | C4th | 06/08 |
| Domicius | 30/03 | ||
| Dominic | 03/08, 04/08, 22/1 | ||
| Dominic Guzman | Spanish founder of Dominicans | 170-1221 | 08/08 (Translation 24/05) |
| Dominic | of Silos | d1073 | 20/12 |
| Dominic Savio | 1842-57 | 08/03 09/03 | |
| Dominic/Domenic Loricatus | 14/10 | ||
| Dominica | 05/07, 06/07, 10/09 | ||
| Dominica | Glastonbury | d c770 | 08/05 |
| Domitian (Donation, Dominic) | 05/07 | ||
| Domitian | 01/07, 07/07, 11/02 | ||
| Domitian | Bishop of Châlons-sur-Marne | 09/08 | |
| Domitian | Bishop of Maastricht | c550 | 07/05 |
| Domitilla | virgin martyr | 07/05 | |
| Domitius | 23/10 | ||
| Domneva/Ermenberga | d c650 | 19/11 | |
| Domnina, Ber(en)ice + Prosdoce | Syria | C4th | 04/10 |
| Domninus | 16/07 | ||
| Domninus | of Parma | 09/10 | |
| Domninus | Bishop of Digne | 13/02 | |
| Domnius | Bishop of Salona | 07/05, 29/07 | |
| Domnolus | Bishop of LeMans | 01/12 | |
| Donal | 26/04 | ||
| Donatian + Rogatian | 24/05 | ||
| Donatian | 06/09 | ||
| Donatian | Bishop of Reims | 14/10, 30/08 | |
| Donatian | Martyr | 25/05 | |
| Donatianus | 15/10 | ||
| Donatus | 01/03 01/04 06/08 17/02 25/02 | ||
| Donatus | Bishop of Besançon | 07/08 | |
| Donatus | Bishop of Fiesole | C9th | 22/10 |
| Donnan | 07/01 | ||
| Donnan | 11/08 | ||
| Donnan | 20/04 | ||
| Donnan/Donan(us) + 52 monks | Abbot of Eigg, martyred by Danes | 618 | 17/04, 16/04 |
| Dorcas/Tabitha | widow of Joppa, Acts of Apostles, Biblical | 25/10 | |
| Dorothea/Dorothy | martyr, Caesarea, Cappadocia | c300 | 06/02 (12/02) |
| Dorotheus | of Tyre | 05/06 | |
| Dorotheus | the Theban | 05/06 | |
| Dorothy | b1347 | 30/10 | |
| Dositheus | 23/02 | ||
| Dotto | Abbot in Orkney | 09/04 | |
| Drausius | d674 | 07/03 | |
| Drausius | Bishop of Soissons | 05/03 | |
| Drithelm | of Melrose | c700 | 17/08, 01/09 |
| Droctoveus | Abbot of St.-Germain-des-Pres | 10/03 | |
| Drogo | Flanders | d1186 | 16/04 |
| Drostan | 14/12 | ||
| Drostan | Abbot of Dalcongail | 11/07 | |
| Dubhan | 11/02 | ||
| Dubhan | 11/11 | ||
| Dubricius | Archbishop of Caerleon | 14/11 | |
| Dubtach | Archbishop of Armagh | 07/10 | |
| Dulcard | 25/10 | ||
| Dulcidius | of Agen | 16/10 | |
| Dumhade | Abbot of St. Columkille | 25/05 | |
| Dunchadh/Donnchadh | Abbot of Iona | 24/03 25/05 | |
| Dunchaid Ó Braoin | Abbot of Clonmacnoise | 16/01 | |
| Dunstan | Abbot of Glastonbury, Archbishop of Canterbury | 909-88 | 19/05 (Ordination 21/10, Translation 07/09) |
| Duthac | Bishop of Ross | 08/03 | |
| Dwyn/Dwyn(w)en | of Llandwyn, dau Brychan | C5th | 25/1 |
| Dyfnan | of Anglesey, son of Brychnan | 24/04 | |
| Dyfnog | of Denbighshire | 13/02 | |
| Dyfrig | Archbishop of Caerleon | (Translation) 29/05 | |
| Dyfrig | founder of Caldey Island | C6th | 14/11 |
This collection of names was compiled by Kate Monk and is ©1997, Kate Monk.
Copies may be made for personal use only.