Day | Saints | Country | Year |
| January 21 |
| Saint Augurio de Tarragona, deacon |  Spain | 259 |
| Saint Eulogio de Tarragona, deacon | Spain | 259 |
| Saint Fructuoso de Tarragona, bishop | Spain | 259 |
| Saint Epifanio di Pavia, bishop |  Italy | 498 |
| Saint Meinrad von Einsiedeln, religious |  Switzerland | 861 |
| Blessed Edward Stransham, priest |  England | 1586 |
| Blessed Nicholas Wheeler (Woodfen), priest | England | 1586 |
| Saint Alban (Bartholomew Roe), priest | England | 1642 |
| Blessed Josefa María de Santa Inés Albiñana Gomar, religious | Spain | 1696 |
| Blessed André Duliou, priest |  France | 1794 |
| Blessed Augustin-Emmanuel Philippot, priest | France | 1794 |
| Blessed François Duchesne, priest | France | 1794 |
| Blessed François Migoret-Lamberdière, priest | France | 1794 |
| Blessed Jacques André, priest | France | 1794 |
| Blessed Jean-Baptiste Triquerie, priest | France | 1794 |
| Blessed Jean-Baptiste Turpin du Cormier, priest | France | 1794 |
| Blessed Jean-Marie Gallot, priest | France | 1794 |
| Blessed Joseph Pellé, priest | France | 1794 |
| Blessed Julien Moulé, priest | France | 1794 |
| Blessed Julien-François Morin, priest | France | 1794 |
| Blessed Louis Gastineau, priest | France | 1794 |
| Blessed Pierre Thomas, priest | France | 1794 |
| Blessed René-Louis Ambroise, priest | France | 1794 |
| Blessed Franciscus Bang (방 프란치스코 / 方), layperson |  South Korea | 1799 |
| Saint Ioannes Yi Yun-il (이윤일 요한 / 李尹一), layperson | South Korea | 1867 |
| January 22 |
| Saint Gaudenzio di Novara, bishop | Italy | 417 |
| Saint Anastasius (Magundat of Persia), religious |  Iraq | 628 |
| Saint Barnard de Vienne, archbishop | France | 841 |
| Saint Domenico di Sora, abbot | Italy | 1031 |
| Blessed Maria Mancini, religious | Italy | 1431 |
| Blessed Antonio della Chiesa, priest | Italy | 1459 |
| Blessed William Patenson, priest | England | 1592 |
| Saint Francesc Gil de Federich de Sans, priest |  Vietnam | 1745 |
| Saint Mateo Alonso de Leciñana y Alonso, priest | Vietnam | 1745 |
| Blessed Guillaume Joseph Chaminade, priest | France | 1850 |
| Saint Vincenzo Pallotti, priest | Italy | 1850 |
| Blessed Laura Vicuña, layperson |  Argentina | 1904 |
| Blessed Giuseppe Nascimbeni, priest | Italy | 1922 |
| Blessed László Batthyány-Strattmann, layperson |  Austria | 1931 |
| Blessed Remigi del Papiol (Esteve Santacana Armengol), priest | Spain | 1937 |
| January 23 |
| Saint Ildefonso, archbishop | Spain | 667 |
| Saint Andreas Chŏng Hwa-gyŏng (정화경 안드레아 / 鄭安德肋), layperson | South Korea | 1840 |
| Blessed Arnoldo Cirilo (Joan Font Taulat), religious | Spain | 1937 |
| Blessed Nikolaus Groß, layperson |  Germany | 1945 |
| Blessed Benedetta Bianchi Porro, layperson | Italy | 1964 |
| January 24 |
| Blessed Paola Gambara Costa, layperson | Italy | 1515 |
| Blessed John Grove, layperson | England | 1679 |
| Blessed William Ireland, priest | England | 1679 |
| Blessed Marie Poussepin, religious | France | 1744 |
| Blessed Paciá María de Barcelona (Francesc María Colomer Presas), religious | Spain | 1937 |
| Blessed Stefan Grelewski, priest | Germany | 1941 |
| Blessed Luigj Prendushi, priest |  Albania | 1947 |
| Blessed Timoteo (Giuseppe Giaccardo), priest | Italy | 1948 |
| Blessed Gaetana Tolomeo (Nuccia), layperson | Italy | 1997 |
| January 25 |
| Saint Gregory of Nazianzus, archbishop |  Turkiye | 390 |
| Saint Priest de Clermont, bishop | France | 676 |
| Blessed Henry Suso (Heinrich Seuse), priest | Germany | 1366 |
| Blessed Antonio Migliorati, religious | Italy | 1450 |
| Blessed Arcangela (Eleanora Girlani), religious | Italy | 1494 |
| Blessed Francesco Zirano, priest |  Algeria | 1603 |
| Blessed Franciscus Kim Sa-jip (김사집 프란치스코), layperson | South Korea | 1802 |
| Blessed Antonius Jeong Chan-mun (정찬문 안토니오 / 鄭燦文), layperson | South Korea | 1867 |
| Blessed Manuel Domingo y Sol, priest | Spain | 1909 |
| Blessed Emilia Fernández Rodríguez, layperson | Spain | 1939 |
| Blessed Maria Antonia (Teresa Grillo Michel), religious | Italy | 1944 |
| Blessed Antoni Świadek, priest |  Poland | 1945 |
| January 26 |
| Saint Paola di Roma, religious |  Palestine | 406 |
| Saint Albéric de Cîteaux, abbot | France | 1109 |
| Saint Øystein Erlendsson (Augustinus), archbishop |  Norway | 1188 |
| Blessed Marie de la Dive veuve du Verdier de la Sorinière, layperson | France | 1794 |
| Saint José Gabriel del Rosario Brochero, priest | Italy | 1914 |
| Blessed Michał Kozal, bishop | Poland | 1943 |
| Blessed Gabriele Allegra (雷永明), priest |  Hong Kong | 1976 |
| January 27 |
| Saint Giuliano di Sora, layperson | Italy | 161 |
| Saint May de Bodon, abbot | France | 550 |
| Saint Maur de Bodon, abbot | France | 555 |
| Saint Vitalian, pope | Italy | 672 |
| Saint Gilduin de Dol, deacon | France | 1077 |
| Blessed Jean de Warneton, bishop | France | 1130 |
| Blessed Manfredo Settale, priest | Italy | 1217 |
| Saint Angela Merici, religious | Italy | 1540 |
| Blessed Saint-Celeste (Rosalie du Verdier de la Sorinière), religious | France | 1794 |
| Saint Augustinus Zhao Rong (趙榮．思定), priest |  China | 1815 |
| Saint Ioannes Maria Muzeyi (Yohana Maria), layperson |  Uganda | 1887 |
| Saint Enrique de Ossó i Cervelló, priest | Spain | 1896 |
| Saint Maria di Gesù (Carolina Santocanale), religious | Italy | 1923 |
| Blessed Jurgis Matulaitis-Matulevicius, archbishop |  Lithuania | 1927 |
| Blessed Antonio Mascaró Colomina, religious | Spain | 1937 |
| Blessed Giovanni Schiavo, priest |  Brazil | 1967 |
| January 28 |
| Blessed Bartolomeo Aiutamicristo da Pisa, religious | Italy | 1224 |
| Blessed Julien Maunoir, priest | France | 1683 |
| Blessed Petrus Won Si-jang (원시장 베드로), layperson | South Korea | 1793 |
| Saint Agatha Lin Zhao (林昭．嘉德), layperson | China | 1858 |
| Saint Hieronymus Lu Tingmei (盧廷美．業樂), layperson | China | 1858 |
| Saint Laurentius Wang Bing (王炳．樂倫), layperson | China | 1858 |
| Saint Josef Freinademetz (福若瑟), priest | Italy | 1908 |
| Blessed Mosè Tovini, priest | Italy | 1930 |
| Blessed María Luisa Montesinos Orduña, layperson | Spain | 1937 |
| Blessed Olimpia (Ol’ha Bida / Ольга Олімпіа Біда), religious |  Russia | 1952 |
| January 29 |
| Saint Juventinus, layperson | Turkiye | 363 |
| Saint Maximinus, layperson | Turkiye | 363 |
| Saint Gildas, abbot | France | 565 |
| Saint Sulpice Sévère, archbishop | France | 591 |
| Blessed Villana delle Botti, religious | Italy | 1360 |
| Blessed Antonius Hong Ik-man (홍익만 안토니오 / 洪翼萬), layperson | South Korea | 1802 |
| Blessed Barnabas Jeong Gwang-su (정광수 바르나바 / 鄭光受), layperson | South Korea | 1802 |
| Blessed Carolus Yi Gyeong-do (이경도 가롤로 / 李景陶), layperson | South Korea | 1802 |
| Blessed Gervasius Son Gyeong-yun (손경윤 제르바시오 / 孫敬允), layperson | South Korea | 1802 |
| Blessed Simon Kim Gye-wan (김계완 시몬 / 金啓完), layperson | South Korea | 1802 |
| Blessed Bronisław Bonawentura Markiewicz, priest | Poland | 1912 |
| Blessed Pablo Daniel (Daniel Altabella Gracia), religious | Spain | 1939 |
| Blessed Bolesława Lament, religious | Poland | 1946 |
| January 30 |
| Saint Bathilde, layperson | France | 680 |
| Saint Aldegonde de Maubeuge, abbess | France | 684 |
| Saint Lesmes de Burgos (Adelelmus), abbot | Spain | 1097 |
| Blessed Francis Taylor (Proinsias Táilliúir), layperson |  Ireland | 1621 |
| Blessed N., layperson |  Japan | 1636 |
| Blessed N., layperson | Japan | 1636 |
| Blessed N., layperson | Japan | 1636 |
| Blessed N., layperson | Japan | 1636 |
| Blessed Ogasawara Genpachi (小笠原 源八), layperson | Japan | 1636 |
| Blessed Ogasawara Gonnosuke (小笠原 権之助), layperson | Japan | 1636 |
| Blessed Ogasawara Goro (小笠原 五郎), layperson | Japan | 1636 |
| Blessed Ogasawara Kuri (小笠原 くり), layperson | Japan | 1636 |
| Blessed Ogasawara Mari (小笠原 まり), layperson | Japan | 1636 |
| Blessed Ogasawara Miya Luisa (マリア 小笠原 みや), layperson | Japan | 1636 |
| Blessed Ogasawara Sasaemon (小笠原 佐左衛門), layperson | Japan | 1636 |
| Blessed Ogasawara Sayuemon (小笠原 三右衛門), layperson | Japan | 1636 |
| Blessed Ogasawara Shiro (小笠原 四郎), layperson | Japan | 1636 |
| Blessed Ogasawara Tsuchi (小笠原 つち), layperson | Japan | 1636 |
| Blessed Ogasawara Yosaburō Gen’Ya (小笠原 与三郎 玄也), layperson | Japan | 1636 |
| Saint Giacinta (Clarice Marescotti), religious | Italy | 1640 |
| Blessed Sebastiano Valfrè, priest | Italy | 1710 |
| Blessed Leo Hong In (홍 인 레오 / 洪鏔), layperson | South Korea | 1802 |
| Blessed Sebastianus Kwon Sang-mun (권상문 세바스티아노 / 權相問), layperson | South Korea | 1802 |
| Blessed Simon Hwang Il-gwang (황일광 시몬 / 黃日光), layperson | South Korea | 1802 |
| Blessed Thomas Han Deok-un (한덕운 토마스 / 韓德運), layperson | South Korea | 1802 |
| Saint Paulus Hŏ Hyŏb (허협 바오로 / 許保祿), layperson | South Korea | 1840 |
| Saint Tôma Khuông, priest | Vietnam | 1860 |
| Saint David Galván Bermúdez, priest |  Mexico | 1915 |
| Saint Mutien-Marie (Louis-Joseph Wiaux), religious |  Belgium | 1917 |
| Blessed Columba Marmion, abbot | Belgium | 1923 |
| Blessed Carmen García Moyón, layperson | Spain | 1937 |
| Blessed Zygmunt Pisarski, priest | Poland | 1943 |
| Blessed Maria Bolognesi, layperson | Italy | 1980 |
| January 31 |
| Saint Cyrus of Alexandria, religious |  Egypt | 303 |
| Saint Aidan (Máedóc of Ferns), bishop | Ireland | 632 |
| Saint Frobert de Troyes, abbot | France | 673 |
| Saint Eusebius von Rankweil, religious | Austria | 884 |
| Blessed Ludovica Albertoni, religious | Italy | 1533 |
| Blessed Richard (Thomas Reynolds (Green)), priest | England | 1642 |
| Blessed Lutgarda Yi Sun-i (이순이 누갈다 / 李順伊), layperson | South Korea | 1802 |
| Blessed Matthaeus Yu Jung-seong (유중성 마태오 / 柳重誠), layperson | South Korea | 1802 |
| Saint Francis Xavier Bianchi (Francesco Saverio Maria Bianchi), priest | Italy | 1815 |
| Blessed Maria Cristina di Savoia, layperson | Italy | 1836 |
| Saint Agatha Kwŏn Chin-i (권진이 아가다 / 權珍伊), layperson | South Korea | 1840 |
| Saint Agatha Yi Kyŏng-i (이경이 아가다 / 李瓊伊), layperson | South Korea | 1840 |
| Saint Augustinus Pak Chong-wŏn (박종원 아우구스티노 / 朴宗源), layperson | South Korea | 1840 |
| Saint Magdalena Son So-byŏk (손소벽 막달레나 / 孫小碧), layperson | South Korea | 1840 |
| Saint Maria Yi In-dŏk (이인덕 마리아 / 李仁德), layperson | South Korea | 1840 |
| Blessed Maria Yi Seong-rye (이성례 마리아 / 李聖禮), layperson | South Korea | 1840 |
| Saint Petrus Hong Pyŏng-ju (홍병주 베드로 / 洪秉周), layperson | South Korea | 1840 |
| Saint John Bosco (Giovanni Bosco), priest | Italy | 1888 |
| Blessed Luigi Talamoni, priest | Italy | 1926 |
| Blessed José Acosta Alemán, priest | Spain | 1937 |
| Blessed Juan José Martínez Romero, priest | Spain | 1937 |
| Blessed Pedro José Rodríguez Cabrera, priest | Spain | 1937 |
| Blessed Candelaria de San José (Susana Paz-Castillo Ramírez), religious |  Venezuela | 1940 |
