| Celebration | Name | Saint | Birth | Death |
|---|---|---|---|---|
| 1 of January | Guillermo | Saint Guillermo abad of Saint Beningno of Dijon | 1031 | |
| 2 of January | Guillermo | Blessed William Repin | 1794 France | |
| 3 of January | Genoveva | Saint Genevieve | 500 France | |
| 3 of January | Gordio | Saint Gordio | 304 Turkey | |
| 4 of January | Gregorio | Saint Gregorio obispo of Langres | 540 France | |
| 5 of January | Gerlaco | Saint Gerlaco | 1165 Belgium | |
| 5 of January | Genoveva | Saint Genoveva Torres Morales | 1870 Spain | 1956 Spain |
| 8 of January | Gudula | Saint Gudula | 712 Belgium | |
| 10 of January | Gregorio | Blessed Gregory X papa | 1276 Italy | |
| 10 of January | Guillermo | Saint Guillermo abad y obispo | 1209 France | |
| 10 of January | Gregorio | Saint Gregorio of Nisa | Turkey | |
| 10 of January | Gonzalo | Blessed Gonzalo | 1259 Portugal | |
| 11 of January | Guillermo | Blessed William Carter | 1584 United kingdom | |
| 13 of January | Godofredo | Saint Godofredo of Ilbenstad | 1127 Germany | |
| 14 of January | Glicerio | Saint Glicerio diácono y mártir | Turkey | |
| 17 of January | Gamalberto | Blessed Gamelbert | 802 Germany | |
| 19 of January | Germánico | Saint Germánico | 167 Turkey | |
| 22 of January | Gaudencio | Saint Gaudencio | 418 Italy | |
| 22 of January | Guillermo | Blessed William Patenson | 1592 United kingdom | |
| 22 of January | Guillermo | Blessed William Chaminade | 1850 France | |
| 27 of January | Gilduino | Saint Gilduino of Dol | 1077 France | |
| 29 of January | Gildas | Saint Gildas, el Sabio | 570 France | |
| 31 of January | Geminiano | Saint Geminiano | Italy | |
| 4 of February | Gilberto | Saint Gilberto of Sempringham | 1189 United kingdom | |
| 4 of February | Gémino | Saint Gémino confesor | ||
| 6 of February | Guarino | Saint Guarino of Palestrina | 1159 Italy | |
| 7 of February | Guillermo | Blessed William Saultemouche | 1593 France | |
| 7 of February | Gil María | Saint Gil María of Saint José (Francisco) Pontillo | 1812 Italy | |
| 10 of February | Guillermo | Saint Guillermo, eremita | 1157 Italy | |
| 11 of February | Gregorio | Saint Gregorio II papa | 731 Italy | |
| 13 of February | Guimera | Saint Guimera | 931 France | |
| 13 of February | Gosberto | Saint Gosberto | 874 Germany | |
| 13 of February | Gilberto | Saint Gilberto of Meaux | 1009 France | |
| 15 of February | Georgia | Saint Georgia | France | |
| 18 of February | Guillermo | Blessed William Harrington | United kingdom | 1594 United kingdom |
| 18 of February | Gertrudis | Blessed Gertrude (Catherine) Comensoli | 1903 Italy | |
| 21 of February | Germán | Saint Germán | 667 Switzerland | |
| 27 of February | Gabriel | Saint Gabriel Possenti | 1838 Italy | 1862 Italy |
| 27 of February | Guillermo | Blessed William Richardson | 1603 United kingdom | |
| 1 of March | Gregorio | Saint Gregorio of Narek | 944 Armenia | 1005 Armenia |
| 5 of March | Gerásimo | Saint Gerásimo, anacoreta | 475 Israel | |
| 7 of March | Gaudioso | Saint Gaudioso | Italy | |
| 15 of March | Guillermo | Blessed William Hart | 1583 United kingdom | |
| 17 of March | Gertrudis | Saint Gertrudis of Nivelles | 659 | |
| 23 of March | Gualterio | Saint Gualterio | 1095 France | |
| 28 of March | Gountrán | Saint Gountrán | France | 593 France |
| 29 of March | Guillermo | Saint Guillermo Tempier | 1197 France | |
| 1 of April | Gilberto | Saint Gilberto of Caihness | 1245 United kingdom | |
| 2 of April | Guillermo | Blessed Vilmos Apor | 1945 Hungary | |
| 3 of April | Gandulfo | Blessed Gandolph of Binasco Sacchi | Italy | 1260 Italy |
| 4 of April | Guillermo | Blessed Guglielmo Cuffitelli | 1411 Italy | |
| 5 of April | Geraldo | Saint Geraldo abad | 1095 France | |
| 6 of April | Gala | Saint Gala | Italy | |
| 6 of April | Guillermo | Saint Guillermo of Dinamarca | 1203 Denmark | |
| 9 of April | Gauquerio | Saint Gauquerio | 1140 France | |
| 11 of April | Gemma | Saint Gemma Galgani | 1878 Italy | 1903 Italy |
| 18 of April | Galdino | Saint Galdino | 1176 Italy | |
| 19 of April | Geroldo | Saint Geroldo | 978 Germany | |
| 20 of April | Geraldo | Blessed Gerald of Salles | 1120 France | |
| 23 of April | Gerardo | Saint Gerardo of Toul | 994 Germany | |
| 24 of April | Guillermo | Saint Guillermo Firmato | 1103 France | |
| 24 of April | Gregorio | Saint Gregorio of Elvira | Spain | |
| 25 of April | Guillermo | Blessed William Marsden | 1586 United kingdom | |
| 26 of April | Guillermo | Saint Guillermo of Foggia | Italy | |
| 26 of April | Gregorio | Blessed Gregorio | Spain | |
| 30 of April | Guillermo | Blessed William Southerne | 1618 United kingdom | |
| 30 of April | Gualfardo | Saint Gualfardo | Germany | 1127 Italy |
| 1 of May | Grata | Saint Grata | Italy | Italy |
| 2 of May | Guillermo | Blessed William Tirry | 1654 Ireland | |
| 4 of May | Godofredo | Saint Gotthard of Hildesheim | 960 Germany | 1038 Germany |
| 5 of May | Geroncio | Saint Geroncio of Milán | 472 Italy | |
| 7 of May | Gisela | Blessed Gisela | 1060 Germany | |
| 8 of May | Gibriano | Saint Gibriano | Ireland | 515 France |
| 9 of May | Gregorio | Saint Gregory of Ostia | Italy | 1044 Spain |
| 9 of May | Geroncio | Saint Geroncio of Ficocle | 501 Italy | |
| 10 of May | Guillermo | Saint Guillermo of Pontoise | United kingdom | 1195 France |
| 10 of May | Gordiano | Saint Gordiano of Roma | Italy | |
| 11 of May | Gualterio | Saint Gualterio of Esterp | 1070 France | |
| 11 of May | Gregorio | Blessed Gregory Celli | 1343 Italy | |
| 11 of May | Gangulfo | Saint Gangulfo of Varennes | France | |
| 12 of May | Germán | Saint Germán of Constantinopla | 634 | 733 |
| 13 of May | Gemma | Saint Gemma of Sulmona | 1375 Italy | 1439 Italy |
| 13 of May | Gliceria | Saint Gliceria of Trajanópolis | Greece | 177 Greece |
| 14 of May | Gil | Blessed Gil of Vaozéla | 1185 Portugal | 1265 Portugal |
| 14 of May | Galo | Saint Galo of Clermont | 551 France | |
| 16 of May | Germerio | Saint Germerio of Tolosa | France | |
| 18 of May | Guillermo | Blessed William of Toulouse | 1369 France | |
| 20 of May | Guido | Blessed Guido of Gherardesca | 1134 Italy | |
| 23 of May | Guiberto | Saint Guiberto | 962 Belgium | |
| 25 of May | Gregorio | Saint Gregory VII pope | 1020 Italy | 1085 Italy |
| 25 of May | Genadio | Saint Genadio of Astorga | Spain | 936 Spain |
| 25 of May | Gerio | Blessed Gerard of Lunel | 1270 Italy | |
| 25 of May | Gerardo | Blessed Gerard Mecatti | 1245 Italy | |
| 27 of May | Gonzaga | Saint Gonzaga Gonza | Uganda | 1886 Uganda |
| 27 of May | Gausberto | Saint Gausberto | 1079 France | |
| 28 of May | Germán | Saint Germain of Paris | 576 France | |
| 28 of May | Guillermo | Saint William of Gellone | France | 812 France |
| 29 of May | Gerardo | Saint Gerardo of Mâcon | 940 France | |
| 29 of May | Guillermo | Blessed William Arnaud and companions | France | 1242 France |
| 29 of May | Gerardesca | Blessed Gerardesca of Pisa | 1269 Italy |