| Celebration | Name | Saint | Birth | Death |
|---|---|---|---|---|
| 9 of May | Geroncio | Saint Geroncio of Ficocle | 501 Italy | |
| 21 of September | Gerulfo | Saint Gerulfo of Tronchiennes | 750 Belgium | |
| 19 of June | Gervasio | Saint Gervasius of Milan | Italy | |
| 28 of October | Ginés | Saint Ginés of Thiers | France | |
| 25 of August | Ginés | Saint Genesius of Arlés | France | 303 France |
| 13 of May | Gliceria | Saint Gliceria of Trajanópolis | Greece | 177 Greece |
| 8 of July | Gliceria | Saint Gliceria of Heraclea | Italy | |
| 21 of December | Glicerio | Saint Glicerio | ||
| 14 of January | Glicerio | Saint Glicerio diácono y mártir | Turkey | |
| 24 of June | Goardo | Saint Goardo of Nantes | 843 France | |
| 30 of July | Godeleva | Saint Godeleva of Ghistelles | 1070 Belgium | |
| 27 of May | Gonzaga | Saint Gonzaga Gonza | Uganda | 1886 Uganda |
| 10 of May | Gordiano | Saint Gordiano of Roma | Italy | |
| 3 of January | Gordio | Saint Gordio | 304 Turkey | |
| 9 of September | Gorgonio | Saint Gorgonio of Roma | 303 Italy | |
| 12 of August | Graciliano | Saint Graciliano of Faleria | Italy | |
| 24 of December | Gregorio | Saint Gregory of Spoleto | Italy | 303 Italy |
| 27 of June | Gudena | Saint Gudena of Cartago | 203 Tunisia | |
| 18 of July | Gundena | Saint Gundena of Cartago | 362 Algeria | |
| 15 of November | Gurias | Saint Gurias of Edesa | ||
| 2 of September | Habib | Saint Habib of Edesa | 322 Turkey | |
| 8 of September | Hadrian | Saint Hadrian of Nicomedia | 304 Turkey | |
| 9 of October | Héctor | Saint Héctor Valdivielso | 1910 Argentina | 1934 Spain |
| 12 of October | Hedisto | Saint Hedisto of Roma | Italy | |
| 16 of July | Helerio | Saint Helerio of Jersey | United kingdom | |
| 28 of May | Helicónides | Saint Helicónides | Greece | |
| 20 of January | Henry | Saint Henry bishop and martyr | United kingdom | 1157 Finland |
| 1 of February | Henry | Saint Henry Morse | 1645 United kingdom | |
| 7 of November | Herculano | Saint Herculano of Perugia | 594 Italy | |
| 12 of July | Hermágoras | Saint Hermágoras of Aquilea | Italy | |
| 4 of November | Hermas | Saint Hermas of Licia | Italy | |
| 13 of April | Hermenegildo | Saint Hermenegild | 564 Spain | 586 Spain |
| 4 of January | Hermes | Saint Hermes mártir | Italy | Romania |
| 28 of August | Hermes | Saint Hermes of Grecia | Greece | Italy |
| 30 of December | Hermetes | Saint Hermetes of Bononia | France | |
| 31 of May | Hermias | Saint Hermias of Comana | Turkey | |
| 27 of July | Hermipo | Saint Hermipo of Nicomedia | Turkey | |
| 27 of July | Hermócrates | Saint Hermócrates of Nicomedia | Turkey | |
| 18 of April | Hermógenes | Saint Hermógenes | Armenia | |
| 27 of July | Hermolao | Saint Hermolao of Nicomedia | Turkey | |
| 7 of April | Herny | Saint Henry Walpole | 1595 United kingdom | |
| 8 of April | Herodión | Saint Herodión | Italy | Italy |
| 14 of December | Herón | Saint Herón | Egypt | 250 Egypt |
| 29 of May | Hesiquio | Saint Hesiquio Palatino | 303 Syrian arab republic | |
| 2 of May | Hespero | Saint Hespero of Atalia | Turkey | |
| 26 of November | Hesychius | Saint hesychius | ||
| 15 of June | Hesychius | Saint Hesychius of Dorostoro | 302 Romania | |
| 3 of December | Hilaria | Saint Hilaria | ||
| 12 of August | Hilaria | Saint Hilaria of Augsburg | 304 Germany | |
| 12 of July | Hilarión | Saint Hilarión of Ancira | Turkey | |
| 13 of August | Hipólito | Saint Hippolytus martyr | 236 Italy | |
| 27 of November | Hirenarco | Saint Hirenarco | ||
| 27 of February | Honorina | Saint Honorina | France | |
| 4 of August | Ia | Saint Ia | Iran | 632 Iran |
| 17 of August | Ierón | Saint Ierón of Frisia | 856 | |
| 17 of October | Ignacio | Saint Ignatius of Antioch | 35 Turkey | 107 Italy |
| 21 of January | Inés | Saint Agnes | Italy | |
| 1 of March | Inés | Saint Inés Cao Kuiying | 1856 China | |
| 12 of July | Inés | Saint Inés Lê Thi Thành (Dê) | Viet nam | 1841 Viet nam |
| 20 of December | Ingenes | Saint Ingenes | ||
| 9 of October | Inocencio | Saint Inocencio of la Inmaculada Canoura y compañeros | 1934 Spain | |
| 22 of September | Iraides | Saint Iraides vírgen y mártir | ||
| 28 of November | Irenarco | Saint Irenarco | Armenia | Armenia |
| 5 of April | Irene | Saint Irene | 204 Macedonia, the former yugoslav republic of | |
| 20 of October | Irene | Saint Irene of Tancor | Portugal | 653 Portugal |
| 28 of June | Ireneo | Saint Irenaeus of Lyon | 130 Turkey | 202 France |
| 3 of July | Ireneo | Saint Ireneo of Chiusi | 273 Italy | |
| 6 of April | Ireneo | Saint Ireneo | Hungary | |
| 19 of October | Isaac | Saint Isaac Jogues | 1646 Canada | |
| 7 of June | Isaac | Saint Isaac of Córdoba | Spain | 851 Spain |
| 17 of June | Isauro | Saint Isauro | ||
| 14 of May | Isidoro | Saint Isidoro of Quío | Greece | |
| 17 of October | Isidoro | Saint Isidoro Gagelin | 1833 China | |
| 22 of December | Isquirión | Saint Isquirión | Egypt | 250 Egypt |
| 1 of June | Isquirión | Saint Isquirión y compañeros | 250 Egypt | |
| 17 of July | Jacinto | Saint Jacinto of Amastris | Turkey | |
| 4 of August | Jacinto | Saint Jacinto of Roma | Italy | |
| 9 of September | Jacinto | Saint Jacinto of Sabina | 690 Italy | |
| 14 of October | Jacobo | Saint Jacobo Laigneau of Langellerie | 1794 France | |
| 27 of November | Jacobo | Saint Jacobo Interciso | Iran | 421 Iran |
| 21 of March | Jacobo | Saint Jacobo el Confesor | 824 Turkey | |
| 18 of January | Jaime | Saint Jaime Hilario Barbal | 1898 | 1936 Spain |
| 3 of December | Jasón | Saint Jasón | ||
| 17 of January | Jenaro | Saint Jenaro Sánchez Delgadillo | 1927 Mexico | |
| 19 of September | Jenaro | Saint Januarius of Naples | Italy | Italy |
| 5 of February | Jesús | Saint Jesús Méndez | 1880 Mexico | 1928 Mexico |
| 9 of July | Joaquín | Saint Joaquín He Kaizhi | 1839 China | |
| 4 of July | Jocundiano | Saint Jocundiano mártir | ||
| 23 of April | Jorge | Saint George | 275 Turkey | 303 Israel |
| 24 of August | Jorge | Saint Jorge Limniota | 730 Turkey | |
| 12 of November | Josafat | Saint Josafat Kuncewicz | 1580 Ukraine | 1623 Ukraine |
| 30 of November | José | Saint José Marchand | 1835 | |
| 6 of December | José | Saint José Nguyen Duy Khang | China | 1861 China |
| 7 of January | José | Saint José Tuân | 1862 Viet nam | |
| 30 of July | José | Saint José Yuan Gengyin | China | 1900 China |
| 21 of August | José | Saint José Dang Dinh Viên | 1838 Viet nam | |
| 1 of June | José | Saint José Tuc | Viet nam | 1862 Viet nam |
| 21 of June | José | Saint José Isabel Flores Varela | 1866 Mexico | 1927 Mexico |
| 9 of July | José | Saint José Yuan Zaide | 1817 China | |
| 26 of June | José | Saint José María Robles | 1888 Mexico | 1927 Mexico |