| Celebration | Name | Saint | Birth | Death |
|---|---|---|---|---|
| 14 of September | Salustia | Saint Salustia of Roma | 251 Italy | |
| 11 of January | Salvio | Saint Salvio | ||
| 26 of June | Salvio | Saint Salvio y compañero | France | France |
| 15 of November | Samonas | Saint Samonas of Edesa | ||
| 3 of September | Sandalio | Saint Saintdalio of Córdoba | Spain | |
| 25 of July | Santiago | James the Greater, Apostle | Israel | 44 Israel |
| 3 of May | Santiago | James the Less, apostle | Israel | |
| 11 of October | Sármata | Saint Sármata of Tebaida | 357 | |
| 12 of February | Saturnino | Saint Saturnino y compañeros mártires of Abitinia | 304 Tunisia | |
| 27 of November | Saturnino | Saint Saturnino | ||
| 29 of November | Saturnino | Saint Saturninus of Tolosa | France | 250 France |
| 29 of November | Saturnino | Saint Saturnino of Cartago | 257 | |
| 29 of March | Saturno | Saint Saturno, mártir | 462 | |
| 20 of January | Sebastián | Saint Sebastian | 256 France | 288 Italy |
| 26 of September | Sebastián | Saint Sebastián Nam I-gwan y compañeros | 1839 Korea, republic of | |
| 15 of January | Secundina | Saint Secundina | Italy | |
| 20 of April | Secundino | Saint Secundino of Córdoba | Spain | |
| 1 of August | Secundino | Saint Secundino mártir | Italy | |
| 24 of March | Secúndulo | Saint Secúndulo of Mauritania | Mauritania | |
| 30 of March | Segundo | Saint Segundo of Asti | Italy | |
| 2 of December | Seguro | Saint Seguro | ||
| 27 of July | Semproniana | Saint Semproniana of Iluro | Spain | |
| 26 of September | Senador | Saint Senador of Albano | Italy | |
| 30 of July | Senén | Saint Senén of Roma | Italy | |
| 14 of November | Serapión | Saint Serapión | United kingdom | 1240 Algeria |
| 20 of February | Serapión | Saint Serapión of Alejandría | 248 Egypt | |
| 8 of September | Sergio | Saint Sergio I papa | Syrian arab republic | 701 Italy |
| 7 of October | Sergio | Saint Sergio of Betsaloe | Syrian arab republic | |
| 24 of February | Sergio | Saint Sergius of Cappadocia | Turkey | |
| 6 of December | Servio | Saint Servio | 484 | |
| 24 of May | Sérvulo | Saint Sérvulo of Trieste | Italy | |
| 23 of January | Severiano | Saint Severiano, mártir | Algeria | |
| 23 of October | Severino | Saint Severino Boecio | 524 Italy | |
| 23 of July | Severo | Saint Severo of Bizia | 304 Turkey | |
| 6 of November | Severo | Saint Severus of Barcelona | Spain | 633 Spain |
| 30 of May | Sico | Saint Sico mártir | ||
| 11 of July | Sidronio | Saint Sidronio of Sens | ||
| 4 of May | Silvano | Saint Silvano of Gaza y compañeros mártires | 304 Israel | |
| 6 of February | Silvano | Saint Silvano, obispo | 238 Syrian arab republic | |
| 2 of December | Silverio | Saint Silverio papa | Italy | 537 Italy |
| 27 of April | Simeón | Saint Simeón | 107 Israel | |
| 26 of May | Simetrio | Saint Simetrio of Roma | Italy | |
| 22 of August | Simfoniano | Saint Simfoniano | France | |
| 12 of December | Simón | Saint Simón Phan Dác Hòa | China | 1840 China |
| 28 of October | Simón | Saint Simon Apostle | Israel | Israel |
| 2 of July | Sinforosa | Saint Sinforosa mártir | 285 Italy | |
| 23 of February | Sireno | Saint Sireno | 307 Italy | |
| 16 of July | Sisenando | Saint Sisenando of Córdoba | 651 Spain | |
| 23 of November | Sisinio | Saint Sisinio | Italy | 325 Italy |
| 7 of August | Sixto | Saint Sixtus II Pope | 258 Italy | |
| 12 of April | Sofía | Saint Sofía of Fermo | Italy | |
| 30 of September | Sofía | Saint Sofía | ||
| 10 of May | Solangia | Saint Solangia | France | |
| 20 of November | Solútor | Saint Solútor of Turín | Italy | 286 Italy |
| 23 of September | Sosso | Saint Sosso of Misena | 305 Italy | |
| 11 of February | Soteris | Saint Soteris | 304 Italy | |
| 22 of April | Sotero | Saint Soter Pope | Italy | 175 Italy |
| 7 of September | Sozonte | Saint Sozonte of Cilicia | Turkey | |
| 25 of April | Stephen | Saint Stephen of Antioch | 479 Syrian arab republic | |
| 14 of November | Stephen | Saint Stephen Theodore Cuénot | 1861 Viet nam | |
| 20 of January | Stephen | Saint Stephen Min Kuk-ka | 1840 Korea, republic of | |
| 5 of July | Stephen | Saint Stephen of Nicea | Italy | |
| 10 of December | Suintino | Saint Suintino Wells | United kingdom | 1591 United kingdom |
| 26 of June | Superio | Saint Superio mártir | ||
| 11 of August | Susana | Saint Susana of Roma | Italy | |
| 24 of August | Tación | Saint Tación of Claudiópolis | Italy | |
| 30 of November | Tadeo | Saint Tadeo Liu Ruiting | China | 1823 China |
| 20 of May | Talaleo | Saint Talaleo | Italy | |
| 10 of October | Tanca | Saint Tanca of Ramerude | France | |
| 14 of August | Tarcisio | Saint Tarcisio | Italy | Italy |
| 15 of January | Tarsicia | Saint Tarsicia | France | |
| 25 of September | Tata | Saint Tata mártir | ||
| 23 of September | Tecla | Saint Thecla of Seleucia | Turkey | |
| 2 of January | Telesforo | Saint Telesforo papa | 136 Italy | |
| 21 of December | Temístocles | Saint Temístocles | ||
| 10 of September | Teodardo | Saint Teodardo of Spira | 670 Germany | |
| 25 of July | Teodomiro | Saint Teodomiro of Córdoba | 851 Spain | |
| 2 of April | Teodora | Saint Teodora Mártir | Lebanon | 307 |
| 23 of October | Teodoreto | Saint Teodoreto of Antioquía | 632 Syrian arab republic | |
| 7 of February | Teodoro | Saint Teodoro of Heraclea | ||
| 17 of February | Teodoro | Saint Teodoro of Bizancius | 306 Turkey | |
| 26 of November | Teodoro | Saint Teodoro obispo y mártir | ||
| 7 of December | Teodoro | Saint Teodoro martir | ||
| 15 of April | Teodoro | Saint Teodoro | 117 Greece | |
| 18 of July | Teodosia | Saint Teodosia of Constantinopla | Turkey | |
| 14 of November | Teodoto | Saint Teodoto of Heraclea | Turkey | |
| 4 of April | Teodulo | Saint Teódulo | Macedonia, the former yugoslav republic of | |
| 2 of May | Teodulo | Saint Teódulo of Atalia | Turkey | |
| 12 of March | Teófanes | Saint Teófanes Cronista | 817 Turkey | |
| 2 of February | Teófano | Saint Teófano Vénard | France | 1861 Viet nam |
| 30 of January | Teófilo | Saint Teófilo, el Joven, mártir | 792 Cyprus | |
| 20 of December | Teófilo | Saint Teófilo soldado y mártir | ||
| 18 of November | Teofredo | Saint Teofredo of Calmeliac | 752 France | |
| 26 of January | Teógenes | Saint Teógenes, mártir | 257 Algeria | |
| 3 of January | Teógeno | Saint Teógeno mártir | 320 Turkey | |
| 3 of January | Teonas | Saint Teonas | 304 Turkey | |
| 20 of November | Teonesto | Saint Teonesto of Verceli | 313 Italy | |
| 27 of March | Teoprepides | Saint Teoprepides | ||
| 6 of December | Tercio | Saint Tercio | 484 | |
| 9 of January | Teresa | Saint Teresa Kim | Korea, republic of | 1840 Korea, republic of |