Day | Saints | Country | Year |
| March 11 |
| Saint Ramiro de León, priest |  Spain | 630 |
| Saint Vicente de León, abbot |  France | 630 |
| Saint Sophronius of Jerusalem, patriarch |  Palestine | 638 |
| Saint Aengus (Óengus mac Óengobann), bishop |  Ireland | 824 |
| Saint Eulogio de Córdoba, priest | Spain | 859 |
| Saint Áurea de San Millán, religious | Spain | 1070 |
| Blessed Jan Chojeński, bishop |  Poland | 1538 |
| Blessed Giovanni Righi, priest |  Italy | 1539 |
| Blessed Thomas Atkinson, priest |  England | 1616 |
| Blessed John Kearney (Seán Ó Cearnaigh), priest | Ireland | 1653 |
| Saint Ðaminh Nguyễn Văn Cẩm, priest |  Vietnam | 1859 |
| Saint Alexius U Se-yŏng (우세영 알렉시오 / 禹世英), layperson |  South Korea | 1866 |
| Saint Marcus Chŏng Ŭi-bae (정의배 마르코 / 丁義培), layperson | South Korea | 1866 |
| Blessed Ciprian (Dedë Nikaj), priest |  Albania | 1948 |
| Blessed Frano Gjini, bishop | Albania | 1948 |
| Blessed Mati (Pal Prennushi), priest | Albania | 1948 |
| March 12 |
| Saint Maximilian of Tebessa, layperson |  Algeria | 295 |
| Saint Innocent I, pope | Italy | 417 |
| Saint Pol Aurélien, bishop | France | 575 |
| Saint Gregory I, pope | Italy | 604 |
| Saint Theophanes the Chronicler, religious |  Greece | 817 |
| Saint Ælfheah of Winchester, bishop | England | 951 |
| Saint Bernardo di Carinola, bishop | Italy | 1109 |
| Blessed Fina di San Gimignano, layperson | Italy | 1253 |
| Blessed Giustina Francucci Bezzoli, religious | Italy | 1319 |
| Blessed Girolamo da Recanati (Girolamo Gherarducci), priest | Italy | 1350 |
| Saint Iosephus Zhang Dapeng (張大鵬．若瑟), layperson |  China | 1815 |
| Blessed Aniela Salawa, religious | Poland | 1922 |
| Saint Luigi Orione, priest | Italy | 1940 |
| Blessed Manuel Solorzano Solórzano, layperson |  El Salvador | 1977 |
| Blessed Nelson Rutilio Lemus, layperson | El Salvador | 1977 |
| Blessed Rutilio Grande García, priest | El Salvador | 1977 |
| March 13 |
| Saint Euphrasia of Constantinople, religious |  Egypt | 410 |
| Saint Leandro, archbishop | Spain | 600 |
| Saint Rodrigo de Córdoba, priest | Spain | 857 |
| Saint Salomón de Córdoba, priest | Spain | 857 |
| Saint Eldrado di Novalesa (Eldrade de la Novalaise), abbot | Italy | 875 |
| Blessed Pietro, abbot | Italy | 1208 |
| Blessed Sancha de Portugal, abbess |  Portugal | 1229 |
| Blessed Agnellus of Pisa (Agnello da Pisa), religious | England | 1235 |
| Saint Dulce dos Pobres (Maria Rita de Sousa Brito Lopes Pontes), religious |  Brazil | 1992 |
| March 14 |
| Saint Mathilde von Ringelheim, layperson |  Germany | 968 |
| Saint Paulina von Fulda, religious | Germany | 1107 |
| Blessed Giacomo Cusmano, priest | Italy | 1888 |
| Blessed Maria Giuseppina di Gesu Crocifisso (Giuseppina Catanea), religious | Italy | 1948 |
| March 15 |
| Saint Leocricia de Córdoba, layperson | Spain | 859 |
| Blessed William Hart, priest | England | 1583 |
| Blessed John Amias, priest | England | 1589 |
| Blessed Robert Dalby, priest | England | 1589 |
| Saint Louise de Marillac, religious | France | 1660 |
| Saint Klemens Maria Hofbauer, priest |  Austria | 1820 |
| Blessed Jan Wojciech Balicki, priest | Poland | 1948 |
| Saint Artémides Zatti, religious |  Argentina | 1951 |
| March 16 |
| Saint Crescentianus, layperson | Italy | 306 |
| Saint Cyriacus, deacon | Italy | 306 |
| Saint Juliana, layperson | Italy | 306 |
| Saint Largus, layperson | Italy | 306 |
| Saint Memmia, layperson | Italy | 306 |
| Saint Smaragdus, layperson | Italy | 306 |
| Saint Patricio, bishop | Spain | 307 |
| Saint Heribert, archbishop | Germany | 1021 |
| Blessed Giovanni Cacciafronte, bishop | Italy | 1184 |
| Blessed Leone Palatini, bishop | Italy | 1343 |
| Saint Jean de Brébeuf, priest |  Canada | 1649 |
| Blessed Joan Baptista Torrents Figueras, priest | Spain | 1937 |
| March 17 |
| Saint Patrick, archbishop |  Northern Ireland | 461 |
| Saint Gertrude de Nivelles, abbess |  Belgium | 659 |
| Saint Konrad von Bayern, cardinal | Germany | 1154 |
| Saint Jan Sarkander, priest |  Czechia | 1620 |
| Saint Gabriel Lalemant, priest | Canada | 1649 |
| Blessed Maria Bárbara da Santíssima Trindade (Bárbara Maix), religious | Brazil | 1873 |
| Blessed Juan Nepomuceno Zegrí y Moreno, priest | Spain | 1905 |
| March 18 |
| Saint Edward of England, layperson | England | 978 |
| Saint Anselm da Baggio, cardinal | Italy | 1086 |
| Saint Salvador de Horta Pladevall i Bien, religious | Italy | 1567 |
| Blessed John Thules, priest | England | 1616 |
| Blessed Roger Wrenno, layperson | England | 1616 |
| Blessed Marthe (Aimée-Adèle Le Bouteiller), religious | France | 1883 |
| Blessed Celestina della Madre di Dio (Maria Anna Donati), religious | Italy | 1925 |
| March 19 |
| Blessed Isnardo da Chiampo, priest | Italy | 1244 |
| Blessed Andrea Gallerani, layperson | Italy | 1251 |
| Blessed Giovanni Buralli da Parma, priest | Italy | 1289 |
| Blessed Sibillina Biscossi, religious | Italy | 1367 |
| Blessed Marco da Montegallo, religious | Italy | 1496 |
| Blessed Juan de Santo Domingo (Juan Martínez Cid / ジョアン･マルティネス･デ･サント･ドミンゴ), priest |  Japan | 1618 |
| Blessed Narcyz (Jan Turchan), priest | Germany | 1942 |
| Blessed Marcel Callo, layperson | Austria | 1945 |
| Blessed Nikollë Vinçens Prenushi, archbishop | Albania | 1949 |
| March 20 |
| Saint Martinho de Dume e Braga, archbishop | Portugal | 579 |
| Saint Cuthbert, bishop | England | 687 |
| Saint Wulfran, archbishop | France | 703 |
| Blessed Ambrogio Sansedoni, priest | Italy | 1286 |
| Saint John of Nepomuk (Jan Nepomuk), priest | Czechia | 1393 |
| Blessed Battista Spagnoli, priest | Italy | 1516 |
| Blessed Ippolito Galantini, layperson | Italy | 1620 |
| Blessed Françoise Tréhet, religious | France | 1794 |
| Blessed Jeanne Veron, religious | France | 1794 |
| Blessed Francisco de Jesús María y José (Francisco Palau y Quer), priest | Spain | 1872 |
| Saint María Josefa del Corazón de Jesús Sancho de Guerra, religious | Spain | 1912 |
| Saint Józef Bilczewski, archbishop |  Ukraine | 1923 |
