Day | Saints | Country | Year |
| September 21 |
| Saint Maure de Troyes, religious |  France | 850 |
| Blessed Marco da Modena Scalabrini, priest |  Italy | 1498 |
| Saint François Jaccard, priest |  Vietnam | 1838 |
| Saint Tôma Trần Văn Thiện, layperson | Vietnam | 1838 |
| Saint Jacques-Honoré Chastan (샤스땅 야고보 / 鄭牙各伯), priest |  South Korea | 1839 |
| Saint Laurent-Marie-Joseph Imbert (앵베르 라우렌시오 / 范世亨), bishop | South Korea | 1839 |
| Saint Pierre-Philibert Maubant (모방 베드로 / 羅伯多祿), priest | South Korea | 1839 |
| Blessed Ambrosio Torrico López, priest |  Spain | 1936 |
| Blessed Cándido del Cacho Cruz, priest | Spain | 1936 |
| Blessed Diego Albañil Barrena, priest | Spain | 1936 |
| Blessed Diego Hompanera París, religious | Spain | 1936 |
| Blessed Doroteo Barrionuevo Peña, priest | Spain | 1936 |
| Blessed Eugenio García Pampliega, priest | Spain | 1936 |
| Blessed Ignacio Carretero Sobrino, priest | Spain | 1936 |
| Blessed Jacinto Martínez Ayuela, priest | Spain | 1936 |
| Blessed José Castro Díaz, priest | Spain | 1936 |
| Blessed José Vila Barri, priest | Spain | 1936 |
| Blessed José María Azurmendi Mugarza, priest | Spain | 1936 |
| Blessed Juan Porras Redondo, priest | Spain | 1936 |
| Blessed Juan José Martínez Blásquez, layperson | Spain | 1936 |
| Blessed Manuel Torró García, layperson | Spain | 1936 |
| Blessed Nicolás de Mier Francisco, priest | Spain | 1936 |
| Blessed Vicente Galbis Gironés, layperson | Spain | 1936 |
| Blessed Vicente Pastor Garrido, priest | Spain | 1936 |
| Blessed Vicente Pelufo Corts, priest | Spain | 1936 |
| Blessed Rosario Angelo Livatino, layperson | Italy | 1990 |
| September 22 |
| Saint Emmeram von Regensburg, bishop |  Germany | 652 |
| Saint Emmeran de Poitiers, bishop | France | 652 |
| Blessed Otto von Österreich, bishop | Germany | 1158 |
| Saint Ignatius of Santhià (Ignazio / Lorenzo Maurizio Belvisotti), priest | Italy | 1770 |
| Blessed Joseph Marchandon, priest | France | 1794 |
| Saint Augustinus Yu Chin-kil (유진길 아우구스티노 / 劉進吉), layperson | South Korea | 1839 |
| Saint Paulus Chŏng Ha-sang (정하상 바오로 / 丁夏祥), layperson | South Korea | 1839 |
| Blessed Antonio Sáez de Ibarra López, religious | Spain | 1936 |
| Blessed Antonio Gil (Antonio Gil Monforte), religious | Spain | 1936 |
| Blessed Carlos Navarro Miquel, priest | Spain | 1936 |
| Blessed Diego Morata Cano, priest | Spain | 1936 |
| Blessed Enrique Pedro Gonzálbez Andreu, layperson | Spain | 1936 |
| Blessed Esteban Cobo Sanz, religious | Spain | 1936 |
| Blessed Federico Cobo Sanz, layperson | Spain | 1936 |
| Blessed Félix Echevarría Gorostiaga, priest | Spain | 1936 |
| Blessed Félix Adriano (Francisco Vicente Edo), religious | Spain | 1936 |
| Blessed Francisco Carlés González, priest | Spain | 1936 |
| Blessed Germán Gozalvo Andreu, priest | Spain | 1936 |
| Blessed José Ardil Lázaro, layperson | Spain | 1936 |
| Blessed José Fernández de Henestrosa Boza, layperson | Spain | 1936 |
| Blessed Josefina Moscardó Montalvá, layperson | Spain | 1936 |
| Blessed Juan García Cervantes, priest | Spain | 1936 |
| Blessed Juan María Torres Pérez, priest | Spain | 1936 |
| Blessed Luis Echevarría Gorostiaga, priest | Spain | 1936 |
| Blessed María de la Purificación Vidal Pastor, layperson | Spain | 1936 |
| Blessed Miguel Zarragúa Iturriaga, religious | Spain | 1936 |
| Blessed Modesto Allepuz Vera, layperson | Spain | 1936 |
| Blessed Ramón Rius Camps, religious | Spain | 1936 |
| Blessed Simón Miguel Rodríguez, religious | Spain | 1936 |
| Blessed Vicente Sicluna Hernández, priest | Spain | 1936 |
| Blessed Manuel Olay Colunga, layperson | Spain | 1937 |
| September 23 |
| Blessed Elena Duglioli, layperson | Italy | 1520 |
| Blessed William Way, priest |  England | 1588 |
| Blessed Émilie (Marie-Émilie-Eugène Tavernier Gamelin), religious |  Canada | 1851 |
| Blessed Francisco de Paula Victor, priest |  Brazil | 1905 |
| Blessed Carmelo María (Crispulo Moyano Linares), priest | Spain | 1936 |
| Blessed Francisco Fernández Gavilán, priest | Spain | 1936 |
| Blessed José Santos Ortega, priest | Spain | 1936 |
| Blessed Juan Elías Medina, priest | Spain | 1936 |
| Blessed María de la Purificación de San José (Purificación Ximénez y Ximénez), religious | Spain | 1936 |
| Blessed María Josefa de Santa Sofía (María Josefa del Río Messa), religious | Spain | 1936 |
| Blessed Maurilio Tobar González, priest | Spain | 1936 |
| Blessed Norberto Cembranos de Villalquite, religious | Spain | 1936 |
| Blessed Sofía Ximénez Ximénez, layperson | Spain | 1936 |
| Blessed Vicente Ballester Far, priest | Spain | 1936 |
| Blessed Bernardina Jabłońska, religious |  Poland | 1940 |
| Blessed Józef Stanek, priest | Poland | 1944 |
| Saint Pius of Pietrelcina (Pio / Francesco Forgione), priest | Italy | 1968 |
| September 24 |
| Saint Germer de Fly, abbot | France | 658 |
| Saint Isarn de Marseille, abbot | France | 1043 |
| Saint Gerard of Csanád (Gellért Sagredo), bishop |  Hungary | 1046 |
| Saint Bőd (Buldus), bishop | Hungary | 1047 |
| Blessed Dalmacio Moner, priest | Spain | 1341 |
| Blessed Robert Hardesty, layperson | England | 1589 |
| Blessed William Spenser, priest | England | 1589 |
| Saint Antonio González (アントニオ・ゴンザレス), priest | Spain | 1637 |
| Saint Pacifico da San Severino (Carlo Antonio Divini), priest | Italy | 1721 |
| Blessed Anton Martin Slomšek, bishop |  Austria | 1862 |
| Blessed Janina (Colomba Matylda Gabriel), abbess | Italy | 1926 |
| Blessed Antonio Pancorbo López, priest | Spain | 1936 |
| Blessed Bernardo Ruiz Cano, layperson | Spain | 1936 |
| Blessed Encarnación Gil Valls, layperson | Spain | 1936 |
| Blessed Esteban García García, religious | Spain | 1936 |
| Blessed Fernando María (Celedonio Martínez Infantes), religious | Spain | 1936 |
| Blessed Francisco Javier Bellido, priest | Spain | 1936 |
| Blessed Guzmán (Perfecto Becerril Merino), religious | Spain | 1936 |
| Blessed José Bellido Aragón, priest | Spain | 1936 |
| Blessed José María Ferrándiz Hernández, priest | Spain | 1936 |
| Blessed José Ramón Ferragud Girbés, layperson | Spain | 1936 |
| Blessed José Ramón Pascual Ferrer Botella, priest | Spain | 1936 |
| Blessed Juan de la Virgen del Castellar (Juan Francisco Joya y Corralero), religious | Spain | 1936 |
| Blessed Luis de San Miguel de los Santos (Luis Erdoiza y Zamalloa), priest | Spain | 1936 |
| Blessed Manuel Gómez Contioso, priest | Spain | 1936 |
| Blessed Melchor del Espíritu Santo (Melchor Rodríguez Villastrigo), priest | Spain | 1936 |
| Blessed Rafael Rodríguez Mesa, religious | Spain | 1936 |
| Blessed Ramón Roca Buscallà, religious | Spain | 1936 |
| Blessed Santiago de Jesús (Santiago Arriaga y Arrien), priest | Spain | 1936 |
| September 25 |
| Saint Finbarr of Cork, bishop |  Ireland | 623 |
| Saint Ermenfroy de Cusance, abbot | France | 670 |
| Saint Andrea, layperson | Italy | 884 |
| Saint Antonio, layperson | Italy | 884 |
| Saint Giovanni, layperson | Italy | 884 |
| Saint Pietro, layperson | Italy | 884 |
| Saint Sergius of Radonezh, abbot |  Russia | 1392 |
| Blessed Marco Criado, priest | Spain | 1569 |
| Blessed Buenaventura de Puzol (Julio Esteve Flors), priest | Spain | 1936 |
| Blessed Félix de las Cinco Heridas (Félix Ugalde Irurzun), religious | Spain | 1936 |
| Blessed Jesú Hita Miranda, religious | Spain | 1936 |
| Blessed José Antón Gómez, priest | Spain | 1936 |
| Blessed José María Vidal Segó, priest | Spain | 1936 |
| Blessed Josep Capdevila Porter, priest | Spain | 1936 |
| Blessed Juan Castro Luque, priest | Spain | 1936 |
| Blessed Juan Codera Marqués, religious | Spain | 1936 |
| Blessed Juan Pedro de San Antonio (José María Bengoa Aranguren), priest | Spain | 1936 |
| Blessed Luis Fermín (Luis Huerta Lara), religious | Spain | 1936 |
| Blessed Pablo María de San José (Pedro Leoz Portillo), religious | Spain | 1936 |
| Blessed Pedro María Sandoica Granados, layperson | Spain | 1936 |
| Blessed Rafael Pardo Molina, religious | Spain | 1936 |
| Blessed Tomás Gil de la Cal, layperson | Spain | 1936 |
| September 26 |
| Saint Cyprian, layperson |  Turkiye | 304 |
| Saint Justina, layperson | Turkiye | 304 |
| Saint Agatha Chŏn Kyŏng-hyŏb (전경협 아가타 / 全敬俠), layperson | South Korea | 1839 |
| Saint Carolus Cho Shin-ch’ŏl (조신철 가롤로 / 趙信喆), layperson | South Korea | 1839 |
| Saint Columba Kim Hyo-im (김효임 골룸바 / 金孝任), layperson | South Korea | 1839 |
| Saint Ignatius Kim Che-jun (김제준 이냐시오 / 金濟俊), layperson | South Korea | 1839 |
| Saint Iulitta Kim (김 율리에타 / 金琉璃代), layperson | South Korea | 1839 |
| Saint Magdalena Hŏ Kye-im (허계임 막달레나 / 許季任), layperson | South Korea | 1839 |
| Saint Magdalena Pak Pong-son (박봉손 막달레나 / 朴鳳孫), layperson | South Korea | 1839 |
| Saint Perpetua Hong Kŭm-ju (홍금주 페르페투아 / 洪今珠), layperson | South Korea | 1839 |
| Saint Sebastianus Nam I-gwan (남이관 세바스티아노 / 南履灌), layperson | South Korea | 1839 |
| Saint Thérèse (Marie-Victoire Couderc), religious | France | 1885 |
| Blessed Kaspar Stanggassinger, priest | Germany | 1899 |
| Blessed Luigi Tezza, priest |  Peru | 1923 |
| Blessed Adolfo Martínez Sáez, layperson | Spain | 1936 |
| Blessed Amalia Abad Casasempere, layperson | Spain | 1936 |
| Blessed Amparo (Teresa Rosat Balasch), religious | Spain | 1936 |
| Blessed Andrés Casinello Barroeta, layperson | Spain | 1936 |
| Blessed Andrés Felíu Bartomeu, religious | Spain | 1936 |
| Blessed Antonio Cid Rodríguez, religious | Spain | 1936 |
| Blessed Antonio José Ureña Liébana, priest | Spain | 1936 |
| Blessed Fernando de Pablos Fernández, religious | Spain | 1936 |
| Blessed Ginés Céspedes Gerez, priest | Spain | 1936 |
| Blessed Jaime Calatrava Romero, layperson | Spain | 1936 |
| Blessed León María de Alacuás (Manuel Legua Martí), priest | Spain | 1936 |
| Blessed Luis María Fernández Martínez, religious | Spain | 1936 |
| Blessed Manuel Casado Garrido, priest | Spain | 1936 |
| Blessed María Jordá Botella, layperson | Spain | 1936 |
| Blessed María del Calvario (Josefa Romero Clariana), religious | Spain | 1936 |
| Blessed Pablo Castellá Barberá, religious | Spain | 1936 |
| Blessed Pedro Solís Rodríguez, priest | Spain | 1936 |
| Blessed Rafael Calatrava Ros, layperson | Spain | 1936 |
| September 27 |
| Saint Hiltrude de Liesse, religious |  Belgium | 800 |
| Saint Adolfo de Córdoba, layperson | Spain | 822 |
| Saint Juan de Córdoba, layperson | Spain | 822 |
| Saint Bonfiglio di Foligno, bishop | Italy | 1115 |
| Saint Kjeld, priest |  Denmark | 1150 |
| Saint Elzéar de Sabran, layperson | France | 1323 |
| Blessed Lorenzo da Ripafratta, priest | Italy | 1456 |
| Saint Vincent de Paul, priest | France | 1660 |
| Blessed Jean-Baptiste Laborie du Vivier, priest | France | 1794 |
| Blessed Alberto Pancorbo Solís, priest | Spain | 1936 |
| Blessed Crescencia Valls Espí, layperson | Spain | 1936 |
| Blessed Herminia Martínez Amigó de Martínez, layperson | Spain | 1936 |
| Blessed Jesús de Sande Tena, priest | Spain | 1936 |
| Blessed José Fenollosa Alcayna, priest | Spain | 1936 |
| Blessed Magdalena Fradera Ferragutcasas, religious | Spain | 1936 |
| Blessed María del Carmen Fradera Ferragutcasas, religious | Spain | 1936 |
| Blessed María Rosa Fradera Ferragutcasas, religious | Spain | 1936 |
| Blessed María Agustina (Antonia Luzmila Rivas López), religious | Peru | 1990 |
| September 28 |
| Saint Pontian, pope | Italy | 235 |
| Saint Salonius de Genève, bishop |  Switzerland | 475 |
| Saint Leoba (Lioba von Tauberbischofsheim), abbess | Germany | 782 |
| Saint Wenceslaus, layperson |  Czechia | 935 |
| Blessed Bernardino da Feltre (Martino Tomitano), priest | Italy | 1494 |
| Blessed Franciscus Pak Gyeong-jin (박경진 프란치스코), layperson | South Korea | 1868 |
| Blessed Margarita Oh (오 마르가리타 / 吳), layperson | South Korea | 1868 |
| Blessed Fidel de Puzol (Mariano Climent Sanchis), religious | Spain | 1936 |
| Blessed Francesc Xavier Ponsa Casallach, religious | Spain | 1936 |
| Blessed Joaquín de San José (Josep Casas Juliá), religious | Spain | 1936 |
| Blessed José Casas Ros, layperson | Spain | 1936 |
| Blessed Manuel Izquierdo Izquierdo, priest | Spain | 1936 |
| Blessed Santiago de Rafelbuñol (Santiago Mestre Iborra), priest | Spain | 1936 |
| Blessed Saturnino Tobar González, religious | Spain | 1936 |
| Blessed John Paul I, pope | Italy | 1978 |
| September 29 |
| Saint Adalrich von Schwaben, priest | Switzerland | 973 |
| Saint Grimoaldo di Pontecorvo, priest | Italy | 1062 |
| Saint Maurice Duault de Carnoët, abbot | France | 1191 |
| Blessed Jean de Montmirail, religious | France | 1217 |
| Blessed Charles de Blois, layperson | France | 1364 |
| Blessed Enrico Scarampi, bishop | Italy | 1440 |
| Saint John of Dukla (Jan z Dukli), priest |  Ukraine | 1484 |
| Saint Simón de Rojas, priest | Spain | 1624 |
| Saint Lazarus (ラサロ), layperson |  Japan | 1637 |
| Saint Lorenzo Ruiz (ロレンソ・ルイス / 李樂倫), layperson | Japan | 1637 |
| Saint Miguel González de Aozaraza de Leibar (ミゲル・デ・アオサラサ), priest | Japan | 1637 |
| Saint Thomas de Saint-Dominique (Guillaume Courtet / ギレルモ・クルテ), priest | France | 1637 |
| Saint Vincentius Shiotsuka (ヴイセンテ・デ・ラ・クルス塩塚), priest | Japan | 1637 |
| Saint René Goupil, religious |  USA | 1642 |
| Blessed Abundo Martín Rodríguez, priest | Spain | 1936 |
| Blessed Antonio Arribas Hortigüela, priest | Spain | 1936 |
| Blessed Antonio Martínez López, priest | Spain | 1936 |
| Blessed Darío Hernández Morató, priest | Spain | 1936 |
| Blessed Francisco Castelló y Aleu, layperson | Spain | 1936 |
| Blessed Francisco Edreira Mosquera, religious | Spain | 1936 |
| Blessed Gumersindo Gómez Rodríguez, religious | Spain | 1936 |
| Blessed Jesús Moreno Ruiz, religious | Spain | 1936 |
| Blessed José del Amo y del Amo, religious | Spain | 1936 |
| Blessed José Rescalvo Ruiz, priest | Spain | 1936 |
| Blessed José Vergara Echevarria, priest | Spain | 1936 |
| Blessed José Villanova Tormo, priest | Spain | 1936 |
| Blessed José Oriol Isern Masso, priest | Spain | 1936 |
| Blessed Pablo Bori Puig, priest | Spain | 1936 |
| Blessed Vicente Sales Genovés, religious | Spain | 1936 |
| Blessed Virgilio Edreira Mosquera, religious | Spain | 1936 |
| Blessed Luigi Monza, priest | Italy | 1954 |
| Blessed Nicolás Tum Castro Quiatan, layperson |  Guatemala | 1980 |
| September 30 |
| Saint Jerome (Hieronymus), priest |  Palestine | 420 |
| Saint Honorius, archbishop | England | 653 |
| Saint Simon de Valois de Vexin, religious | Italy | 1082 |
| Saint Amato di Nusco, bishop | Italy | 1093 |
| Blessed Felicia Meda, abbess | Italy | 1444 |
| Saint Francisco de Borja, priest | Italy | 1572 |
| Blessed Jean-Nicolas Cordier, priest | France | 1794 |
| Blessed Federico Albert, priest | Italy | 1876 |
| Saint Thérèse of the Child Jesus (Thérèse de l’Enfant-Jésus / Marie Françoise-Thérèse Martin), religious | France | 1897 |
| Blessed Antonio Cañada Fernández, priest | Spain | 1936 |
| Blessed Joaquín Muñoz Maestre-Aranda, priest | Spain | 1936 |
| Blessed Juan Antonio Ramírez Navarro, priest | Spain | 1936 |
| Blessed Manuel Serrano Zafra, priest | Spain | 1936 |
