| Celebration | Name | Saint | Birth | Death |
|---|---|---|---|---|
| 11 of September | Leudino | Saint Leudino of Toul | 680 France | |
| 3 of November | Libertino | Saint Libertino of Agrigento | Italy | |
| 9 of April | Liborio | Saint Liborio | France | |
| 27 of August | Licerio | Saint Licerio of Couserans | Spain | 540 France |
| 1 of November | Licinio | Saint Licinio of Anjou | 606 France | |
| 8 of March | Litifredo | Saint Litifredo | 874 Italy | |
| 13 of September | Litorio | Saint Litorio of Tours | 371 France | |
| 29 of September | Liudwino | Saint Liudwino of Tréveris | 717 Germany | |
| 2 of May | Longinos | Saint Longinos | Mauritius | |
| 14 of November | Lorenzo | Saint Lorenzo O´Toole | Ireland | 1180 United kingdom |
| 8 of January | Lorenzo | Saint Lorenzo Giustiniani | 1456 Italy | |
| 2 of February | Lorenzo | Saint Lorenzo of Canterbury | 619 United kingdom | |
| 7 of February | Lorenzo | Saint Lorenzo of Siponte | 545 Italy | |
| 10 of December | Lucas | Saint Lucas obispo | Italy | 1114 Italy |
| 3 of January | Luciano | Saint Luciano | Italy | |
| 20 of May | Lucífero | Saint Lucífero of Cagliari | 370 France | |
| 26 of March | Ludgero | Saint Ludgero | Germany | Germany |
| 29 of March | Ludolfo | Saint Ludolfo of Ratzeburg | Germany | 1250 Germany |
| 19 of August | Luis | Saint Luis of Brignoles | 1297 France | |
| 13 of November | Luis | Saint Luis Versiglia | 1873 Italy | 1930 China |
| 16 of October | Lulo | Saint Lulo of Hersfeld | 786 Germany | |
| 3 of February | Lupicino | Saint Lupicino of Lyon | France | |
| 22 of May | Lupo | Saint Lupo of Limoges | 637 France | |
| 29 of July | Lupo | Saint Lupo of Troyes | 478 France | |
| 1 of September | Lupo | Saint Lupo of Sens | 623 France | |
| 24 of September | Lupo | Saint Lupo of Lyon | 528 France | |
| 27 of April | Macaldo | Saint Macaldo | United kingdom | |
| 3 of September | Macanisio | Saint Macanisio of Irlanda | 514 Ireland | |
| 12 of November | Macario | Saint Macario of Maleo, Escocia | Ireland | United kingdom |
| 10 of March | Macario | Saint Macario of Jerusalén | 325 Israel | |
| 24 of March | Maccartemio | Saint Maccartemio | Ireland | Ireland |
| 15 of November | Maclovio | Saint Maclovio of Alet | France | 640 France |
| 24 of October | Maglorio | Saint Maglorio of Dol | 605 France | |
| 25 of July | Magnerico | Saint Magnerico of Tréveris | 596 Italy | |
| 19 of August | Magno | Saint Magno of Aviñón | France | 660 Italy |
| 6 of October | Magno | Saint Magno of Venecia | 670 Italy | |
| 1 of November | Magno | Saint Magno of Milán | Italy | |
| 2 of January | Mainquino | Saint Mainquino | Ireland | |
| 2 of November | Malaquías | Saint Malaquías of Armagh | 1049 Ireland | 1148 Ireland |
| 15 of January | Malardo | Saint Malardo | 650 France | |
| 22 of October | Malón | Saint Malón of Rouen | France | |
| 11 of May | Mamerto | Saint Mamerto of Vienne | 475 France | |
| 19 of February | Mansueto | Saint Mansueto of Milán | 680 Italy | |
| 28 of November | Mansueto | Saint Mansueto of Uruci | ||
| 3 of September | Mansueto | Saint Mansueto of Toul | France | |
| 9 of January | Marcelino | Saint Marcelino obispo | Italy | |
| 20 of April | Marcelino | Saint Marcelino of Embrún | 374 France | |
| 14 of August | Marcelo | Saint Marcelo of Apamea | 390 Syrian arab republic | |
| 17 of January | Marcelo | Saint Marcelo obispo | 510 France | |
| 1 of November | Marcelo | Saint Marcelo of París | France | |
| 30 of June | Marcial | Saint Marcial of Limoges | France | |
| 30 of October | Marciano | Saint Marciano of Siracusa | Italy | |
| 6 of March | Marciano | Saint Marciano of Tortona | Italy | |
| 29 of March | Marcos | Saint Marcos of Aretusa | 364 Syrian arab republic | |
| 22 of October | Marcos | Saint Marcos of Jerusalén | Israel | |
| 5 of November | Marcos | Saint Marcos of Ecano | Italy | |
| 25 of November | Márculo | Saint Márculo | Tunisia | 347 Tunisia |
| 21 of November | Marino | Saint Marino of Porec | Croatia (Hrvatska) | |
| 31 of December | Mario | Saint Mario obispo | 594 Switzerland | |
| 23 of April | Marolo | Saint Marolo of Milán | Italy | |
| 11 of November | Martín | Saint Martín of Tours | 316 Hungary | 397 France |
| 1 of July | Martín | Saint Martín of Vienne | France | |
| 16 of September | Martín | Saint Martín el Sacerdote | 1213 Spain | |
| 20 of March | Martín | Saint Martin of Dumio | 515 Hungary | 580 Portugal |
| 16 of February | Maruta | Saint Maruta | 420 | |
| 4 of December | Marutas | Saint Marutas | Syrian arab republic | Syrian arab republic |
| 22 of April | Maryahb | Saint Maryahb | 341 Iraq | |
| 18 of July | Materno | Saint Materno of Milán | Italy | |
| 14 of September | Materno | Saint Materno of Colonia | Germany | |
| 30 of January | Matías | Saint Matías of Jerusalén | Israel | |
| 13 of September | Maurilio | Saint Maurilio of Angers | 453 France | |
| 25 of October | Mauro | Saint Mauro of Pécs | 1070 Hungary | |
| 21 of November | Mauro | Saint Mauro of Cesana | 946 Italy | |
| 21 of November | Mauro | Saint Mauro of Verona | Italy | 946 Italy |
| 21 of October | Mauronto | Saint Mauronto of Marsella | 780 France | |
| 25 of June | Max | Saint Max of Turin | Italy | |
| 9 of June | Maximiano | Saint Maximiano of Siracusa | 594 Italy | |
| 22 of February | Maximiano | Saint Maximianus of Ravenna | 556 Italy | |
| 3 of October | Maximiano | Saint Maximiano of Bagai | 410 Turkey | |
| 12 of October | Maximiliano | Saint Maximiliano of Lorch | Germany | |
| 29 of May | Maximinius | Saint Maximinius of Treveris | France | 346 France |
| 5 of May | Máximo | Saint Máximo of Jerusalén | 350 Israel | |
| 11 of June | Máximo | Saint Máximo of Nápoles | Italy | |
| 27 of November | Máximo | Saint Máximo | France | 469 France |
| 8 of January | Máximo | Saint Máximo obispo | 514 Italy | |
| 2 of August | Máximo | Saint Máximo of Padua | Italy | |
| 7 of February | Máximo | Saint Máximo of Nola | Italy | |
| 9 of April | Máximo | Saint Máximo of Alejandría | 282 Egypt | |
| 8 of June | Medardo | Saint Medard | France | 560 |
| 11 of October | Meinardo | Saint Meinardo of Riga | 1196 Latvia | |
| 7 of July | Mel | Saint Mel Ruain | Ireland | 789 Ireland |
| 6 of November | Melanio | Saint Melanio of Rennes | 511 France | |
| 16 of January | Melas | Saint Melas | 390 Egypt | |
| 28 of July | Melchor | Saint Melchor García Sampedro | 1858 Viet nam | |
| 4 of December | Melecio | Saint Melecio | Russian federation | Russian federation |
| 12 of February | Melecio | Saint Melecio of Antioquía | 381 | |
| 6 of February | Melis | Saint Melis | 488 Ireland | |
| 24 of April | Melito | Saint Melito | 624 United kingdom | |
| 5 of August | Memmio | Saint Memmio of Chalons | France | |
| 25 of August | Menas | Saint Menas of Constantinopla | 552 Turkey |