| Celebration | Name | Saint | Birth | Death |
|---|---|---|---|---|
| 18 of September | Domingo | Saint Domingo Trach | 1840 Viet nam | |
| 19 of September | Donmedonte | Saint Dorimedonte mártir | ||
| 20 of September | Dorymedon | Saint Dorymedon of Synnada | Turkey | |
| 22 of September | Dionisio | Blessed Dionisio Pamplona | 1868 Spain | 1936 Spain |
| 22 of September | David Carlos | Blessed David Carlos of Vergara | 1907 Spain | 1936 Spain |
| 24 of September | Dalmacio | Blessed Dalmacio Moner | 1341 Spain | |
| 26 of September | Damián | Saint Damian | Saudi arabia | Turkey |
| 29 of September | Darío | Blessed Darío Hernández Morató | 1936 Spain | |
| 3 of October | Dionysius | Saint Dionysius Areopagite | ||
| 9 of October | Dionisio | Saint Denis of Paris and companions | France | |
| 9 of October | Deusdedit | Saint Deusdeditus of Montecasino | 834 Italy | |
| 9 of October | Domnunus | Saint Domninus of Fidenza | Italy | |
| 10 of October | Daniel | Blessed Daniel Comboni | 1881 Sudan | |
| 12 of October | Domnina | Saint Domnina of Anazarbe | 301 Turkey | |
| 14 of October | Domingo | Saint Domingo Loricato | 1060 Italy | |
| 14 of October | Donatian | Saint Donatian of Reims | 389 Belgium | |
| 17 of October | Dulcidius | Saint Dulcidius of Agen | Germany | |
| 22 of October | Duns | Saint Duns Scotus | Ireland | 875 Italy |
| 25 of October | Daría | Saint Daría of Roma | 253 Italy | |
| 26 of October | Damián | Blessed Damien Furcheri | 1484 Italy | |
| 29 of October | Dodo | Saint Dodo of Wallers | France | |
| 31 of October | Domingo | Blessed Dominic Collins | 1602 Ireland | |
| 2 of November | Difuntos | Commemoration of All the Faithful Departed | ||
| 2 of November | Daría | Saint Daría Bochana | ||
| 3 of November | Domnus | Saint Domnus of Vienne | 538 France | |
| 5 of November | Domingo | Saint Domingo Mau | 1858 Viet nam | |
| 5 of November | Domnino | Saint Domnino of Cesarea | Israel | 307 Israel |
| 6 of November | Dámaso | Blessed Damaso Arconada Merino | Spain | Spain |
| 6 of November | Dámaso | Blessed Damaso Luis | Spain | Spain |
| 6 of November | Daniel | Blessed Daniel de la Sagrada Pasión | Spain | Spain |
| 6 of November | Daniela | Blessed Daniela of Saint Bernabé | Spain | Spain |
| 6 of November | Diego | Blessed Diego Hompanera París | Spain | Spain |
| 6 of November | Dionisio | Blessed Dionisio Luis | Spain | Spain |
| 6 of November | Dionisio | Blessed Dionisio Martín | Spain | Spain |
| 6 of November | Dionisio | Blessed Dionisio Terceño Vicente | Spain | Spain |
| 6 of November | Dionisio | Blessed Dionisio Ullívarri Barajuán | Spain | Spain |
| 6 of November | Domingo | Blessed Domingo Alonso of Frutos | Spain | Spain |
| 6 of November | Domingo | Blessed Domingo Sánchez Lázaro | Spain | Spain |
| 10 of November | Demetrius | Saint Demetrius of Rostov | Russian federation | 1709 Russian federation |
| 10 of November | Demetrius | Saint Demetrius of Antioch | 260 | |
| 13 of November | Diego | Saint Didacus of Alcala | 1400 Spain | 1444 Spain |
| 13 of November | Dalmatius | Saint Dalmatius of Rodez | 580 France | |
| 14 of November | Dubricius | Saint Dubricius of Bardsey | United kingdom | |
| 15 of November | Desiderius | Saint Desiderius of Cahors | 655 France | |
| 22 of November | Dimbalac | Blessed Dimbalac Oghlou Wartavar | Armenia | 1895 Armenia |
| 22 of November | David | Blessed David Oghlou David | Armenia | 1895 Armenia |
| 25 of November | Dubricius | Saint Dubricius | ||
| 26 of November | Didius | Saint Didius | ||
| 26 of November | Delfina | Blessed Delphine | France | 1360 France |
| 26 of November | Domingo | Saint Domingo Nguyen Van Xuyên | Viet nam | 1839 Viet nam |
| 27 of November | Delfina de Glandéres | Blessed Delphina of Glandéres | ||
| 29 of November | Demetrius | Saint Demetrius | ||
| 29 of November | Dionisio | Blessed Dionisio de la Natividad (Pedro Berthelot) | 1600 France | 1638 France |
| 1 of December | Domnolus | Saint Domnolus | France | 581 France |
| 6 of December | Dativa | Saint Dativa | 484 | |
| 6 of December | Dionisia | Saints Dionisia y compañeros | 484 | |
| 11 of December | Dámaso | Saint Damasus I Pope | 305 | 384 |
| 11 of December | Daniel | Saint Daniel Stylite | Turkey | 493 Turkey |
| 14 of December | Dróside | Saint Dróside | Syrian arab republic | Syrian arab republic |
| 14 of December | Dioscorus | Saint Dioscorus | Egypt | 250 Egypt |
| 20 of December | Domingo | Saint Dominic of Silos | Spain | 1073 Spain |
| 21 of December | Domingo | Blessed Domenico Spadafora | Italy | 1521 Italy |
| 24 of December | Delphin | Saint Delphin of Bordeaux | 404 France | |
| 26 of December | Dionysius | Saint Dionysius Pope | 268 Italy |