| Celebration | Name | Saint | Birth | Death |
|---|---|---|---|---|
| 8 of December | Inmaculada | Immaculate Conception of Mary | ||
| 12 of December | Israel | Saint Israel | France | 1014 France |
| 20 of December | Ilduara | Saint Ilduara | ||
| 20 of December | Ingenes | Saint Ingenes | ||
| 22 of December | Isquirión | Saint Isquirión | Egypt | 250 Egypt |
| 23 of December | Ivón | Saint Ivón | 1116 France | |
| 24 of December | Irmina | Saint Irmina of Tréveris | France | 710 France |
| 28 of December | Inocentes | All Saints |