Day | Saints | Country | Year |
| October 1 |
| Saint Bavo van Gent, religious |  Belgium | 654 |
| Blessed Nicola da Forca Palena, priest |  Italy | 1449 |
| Blessed François d’Estaing, bishop |  France | 1529 |
| Blessed Christopher Buxton, priest |  England | 1588 |
| Blessed Gerard Edwards (Edward Campion), priest | England | 1588 |
| Blessed Edward James, priest | England | 1588 |
| Blessed John Robinson, priest | England | 1588 |
| Blessed Ralph Crockett, priest | England | 1588 |
| Blessed Robert Widmerpool, layperson | England | 1588 |
| Blessed Robert Wilcox, priest | England | 1588 |
| Blessed Andreas Yoshida (アンドレス吉田), layperson |  Japan | 1617 |
| Blessed Gaspar Ueda Hikojirō (ガスパル上田彦次郎), layperson | Japan | 1617 |
| Blessed Juan de Palafox y Mendoza, bishop |  Spain | 1659 |
| Blessed Luigi Maria Monti, religious | Italy | 1900 |
| Blessed Cecilia Eusepi, layperson | Italy | 1928 |
| Blessed Carmelo Juan Pérez Rodríguez, religious | Spain | 1936 |
| Blessed Higinio de Mata Díez, layperson | Spain | 1936 |
| Blessed Juan de Mata Díez, layperson | Spain | 1936 |
| Blessed Justo Gómez Mudarra, layperson | Spain | 1936 |
| Blessed Antoni Rewera, priest |  Germany | 1942 |
| Blessed Mykyta Budka (Микита Будка), bishop |  Ukraine | 1949 |
| Blessed Jesús Emilio Jaramillo Monsalve, bishop |  Colombia | 1989 |
| October 2 |
| Saint Léger d’Autun, bishop | France | 678 |
| Saint Bérégise d’Andage, abbot | Belgium | 725 |
| Blessed Andreas Yakichi (アンドレス・同息子), layperson | Japan | 1622 |
| Blessed Franciscus Yakichi (フランシスコ・同息子), layperson | Japan | 1622 |
| Blessed Lucia (ルシア), layperson | Japan | 1622 |
| Blessed Ludovicus Yakichi (ルイス弥吉), layperson | Japan | 1622 |
| Blessed Georges-Edme René, priest | France | 1794 |
| Saint Jeanne-Emilie de Villeneuve, religious | France | 1854 |
| Blessed Antoine Chevrier, priest | France | 1879 |
| Blessed Jan Beyzym, priest |  Madagascar | 1912 |
| Blessed Acisclo Juan Carmona López, priest | Spain | 1936 |
| Blessed Álvaro Sanjuan Canet, priest | Spain | 1936 |
| Blessed Antonio Fuentes Ballesteros, priest | Spain | 1936 |
| Blessed Bartolomé Blanco Márquez, layperson | Spain | 1936 |
| Blessed Elías Carbonell Mollá, priest | Spain | 1936 |
| Blessed Enrique Sáiz Aparicio, priest | Spain | 1936 |
| Blessed Florencia Caerols Martínez, layperson | Spain | 1936 |
| Blessed Francisco Carceller Galindo, priest | Spain | 1936 |
| Blessed Isidoro Bover Oliver, priest | Spain | 1936 |
| Blessed Isidro (Juan Iñiguez de Ciriano Abechuco), priest | Spain | 1936 |
| Blessed José Fuentes Ballesteros, priest | Spain | 1936 |
| Blessed Juan Carbonell Mollá, priest | Spain | 1936 |
| Blessed Manuel Arenas Castro, priest | Spain | 1936 |
| Blessed Manuel Borrajo Míguez, religious | Spain | 1936 |
| Blessed Manuel Ruiz Caballero, priest | Spain | 1936 |
| Blessed María Guadalupe (María Francisca Ricart Olmos), religious | Spain | 1936 |
| Blessed Mateo Garolera Masferrer, religious | Spain | 1936 |
| Blessed Miguel Arenas Castro, layperson | Spain | 1936 |
| Blessed Pedro Artolozaga Mellique, religious | Spain | 1936 |
| Blessed Maria Antonina (Maria Anna Kratochwil), religious | Ukraine | 1942 |
| October 3 |
| Saint Cyprien de Toulon, bishop | France | 546 |
| Blessed Utto von Metten, abbot | Germany | 829 |
| Saint Gérard de Brogne, abbot | Belgium | 959 |
| Saint Adalgotto, bishop |  Switzerland | 1160 |
| Saint Francis of Assisi (Giovanni Francesco Bernardone), deacon | Italy | 1226 |
| Saint Ambrósio Francisco Ferro, priest |  Brazil | 1645 |
| Saint Antônio Baracho, layperson | Brazil | 1645 |
| Saint Antônio Vilela, layperson | Brazil | 1645 |
| Saint Antônio Vilela Cid, layperson | Brazil | 1645 |
| Saint Diogo Pereira, layperson | Brazil | 1645 |
| Saint Estêvão Machado de Miranda, layperson | Brazil | 1645 |
| Saint Francisco de Bastos, layperson | Brazil | 1645 |
| Saint Francisco Mendes Pereira, layperson | Brazil | 1645 |
| Saint João da Silveira, layperson | Brazil | 1645 |
| Saint João Lostau Navarro, layperson | Brazil | 1645 |
| Saint João Martins, layperson | Brazil | 1645 |
| Saint José do Porto, layperson | Brazil | 1645 |
| Saint Manuel Rodrigues de Moura, layperson | Brazil | 1645 |
| Saint Mateus Moreira, layperson | Brazil | 1645 |
| Saint N., layperson | Brazil | 1645 |
| Saint N., layperson | Brazil | 1645 |
| Saint N., layperson | Brazil | 1645 |
| Saint N., layperson | Brazil | 1645 |
| Saint N., layperson | Brazil | 1645 |
| Saint N., layperson | Brazil | 1645 |
| Saint N., layperson | Brazil | 1645 |
| Saint N., layperson | Brazil | 1645 |
| Saint N., layperson | Brazil | 1645 |
| Saint N., layperson | Brazil | 1645 |
| Saint N., layperson | Brazil | 1645 |
| Saint N., layperson | Brazil | 1645 |
| Saint Simão Correia, layperson | Brazil | 1645 |
| Saint Vicente de Souza Pereira, layperson | Brazil | 1645 |
| Blessed Crescencio García Pobo, priest | Spain | 1936 |
| Blessed Eduardo Infante del Castillo, layperson | Spain | 1936 |
| Blessed Eleuterio Castillo Gómez, priest | Spain | 1936 |
| Blessed Enrique Morant Pellicer, priest | Spain | 1936 |
| Blessed José María González Solís, priest | Spain | 1936 |
| Blessed Manuel Lucas Ibáñez, priest | Spain | 1936 |
| Blessed Pedro Pardo Barrón, priest | Spain | 1936 |
| Blessed Raimundo Joaquín Castaño González, priest | Spain | 1936 |
| Blessed Szilárd István Bogdánffy, bishop |  Romania | 1953 |
| October 4 |
| Saint Aure de Paris, abbess | France | 666 |
| Saint Teresa of Jesus (Teresa Sánchez de Cepeda y Ahumada), religious | Spain | 1582 |
| Blessed Franciscus Kim Jong-gyo (김종교 프란치스코 / 金宗敎), layperson |  South Korea | 1801 |
| Blessed Philippus Hong Pil-ju (홍필주 필립보 / 洪弼周), layperson | South Korea | 1801 |
| Blessed Francis Xavier Seelos, priest |  USA | 1867 |
| Blessed Avelino Martínez de Arenzana Candela, religious | Spain | 1936 |
| Blessed Cristóbal Pérez del Barrio, religious | Spain | 1936 |
| Blessed Cruz Ibáñez López, religious | Spain | 1936 |
| Blessed Feliciano Martínez Granero, religious | Spain | 1936 |
| Blessed Francisco Álvarez Baena, priest | Spain | 1936 |
| Blessed Fulgencio Martínez García, priest | Spain | 1936 |
| Blessed José Canet Giner, priest | Spain | 1936 |
| Blessed José Gafo Muñiz, priest | Spain | 1936 |
| Blessed José Ruiz Berruezo, priest | Spain | 1936 |
| Blessed José Miguel Peñarroya Dolz, religious | Spain | 1936 |
| Blessed Juan José Orayen Aizcorbe, religious | Spain | 1936 |
| Blessed Leandro José Aloy Domenech, religious | Spain | 1936 |
| Blessed Leopoldo de Francisco Pío, religious | Spain | 1936 |
| Blessed Martina Vázquez Gordo, religious | Spain | 1936 |
| Blessed Publio Fernández González, religious | Spain | 1936 |
| October 5 |
| Saint Placido, religious | Italy | 541 |
| Saint Apollinaire, archbishop | France | 611 |
| Saint Froilán, bishop | Spain | 905 |
| Blessed Aymard de Cluny, abbot | France | 965 |
| Blessed Pietro Pattarini da Imola, religious | Italy | 1320 |
| Blessed Raimondo delle Vigne, priest | Germany | 1399 |
| Blessed Matteo (Giovanni Francesco Carreri), priest | Italy | 1470 |
| Blessed John Hewett, priest | England | 1588 |
| Blessed Robert Sutton, layperson | England | 1588 |
| Blessed William Hartley, priest | England | 1588 |
| Saint Anna Schäffer, layperson | Germany | 1925 |
| Saint Bartolo Longo, layperson | Italy | 1926 |
| Saint Tranquilino Ubiarco Robles, priest |  Mexico | 1928 |
| Blessed Eloy José (Eloy Rodríguez Gutiérrez), religious | Spain | 1936 |
| Blessed Eugenio Andrés Amo, religious | Spain | 1936 |
| Blessed Rafael Alcocer Martínez, priest | Spain | 1936 |
| Blessed Sebastián Segarra Barberá, priest | Spain | 1936 |
| Blessed Valente José (Jesús Delgado de la Fuente), religious | Spain | 1936 |
| Saint Faustina Kowalska (Maria Faustyna / Helena Kowalska), religious |  Poland | 1938 |
| Blessed Marian Skrzypczak, priest | Poland | 1939 |
| Blessed Alberto Marvelli, layperson | Italy | 1946 |
| October 6 |
| Saint Adalbero di Würzburg, bishop | Germany | 1090 |
| Saint Bruno von Köln, priest | Italy | 1101 |
| Blessed Balduino, cardinal | Italy | 1145 |
| Blessed Agatha (アガタ), layperson | Japan | 1619 |
| Blessed Anna Kajiya (アンナ 鍛冶屋), layperson | Japan | 1619 |
| Blessed Antonius Dōmi (アントニオ どみ), layperson | Japan | 1619 |
| Blessed Benedictus (ベネディクト), layperson | Japan | 1619 |
| Blessed Catharina Hashimoto (カタリナ 橋本), layperson | Japan | 1619 |
| Blessed Cosmas (コスマ), layperson | Japan | 1619 |
| Blessed Didacus Tsūzu (ヤコブ 辻), layperson | Japan | 1619 |
| Blessed Emmanuel Kosaburō (エマヌエル 小三郎), layperson | Japan | 1619 |
| Blessed Franciscus (フランシスコ), layperson | Japan | 1619 |
| Blessed Franciscus Hashimoto (フランシスコ 橋本), layperson | Japan | 1619 |
| Blessed Franciscus Shizaburo (フランシスコ 庄三郎), layperson | Japan | 1619 |
| Blessed Gabriel (ガブリエル), layperson | Japan | 1619 |
| Blessed Hieronimus Sōroku (ヒエロニモ 惣六), layperson | Japan | 1619 |
| Blessed Ioachim Ogawa (ジョアキム 小川), layperson | Japan | 1619 |
| Blessed Ioannes Hashimoto Tahyōe (ヨハネ 橋本 太兵衛), layperson | Japan | 1619 |
| Blessed Ioannes Kyūsaku (ヨハネ 久作), layperson | Japan | 1619 |
| Blessed Ioannes Sakurai (ヨハネ 桜井如庵), layperson | Japan | 1619 |
| Blessed Leo Kyūsuke (レオ 金助), layperson | Japan | 1619 |
| Blessed Linus Rihyōe (リノ 利兵衛), layperson | Japan | 1619 |
| Blessed Lucia (ルチア), layperson | Japan | 1619 |
| Blessed Lucia (ルチア), layperson | Japan | 1619 |
| Blessed Lucia (ルチア), layperson | Japan | 1619 |
| Blessed Ludovica Hashimoto (ルドビコ 橋本), layperson | Japan | 1619 |
| Blessed Ludovicus Matagorō (ルドビコ 又五郎), layperson | Japan | 1619 |
| Blessed Magdalena (マグダレナ), layperson | Japan | 1619 |
| Blessed Magdalena (マグダレナ), layperson | Japan | 1619 |
| Blessed Mancius Kyūjirō (マンショ 九次郎), layperson | Japan | 1619 |
| Blessed Maria (マリア), layperson | Japan | 1619 |
| Blessed Maria (マリア), layperson | Japan | 1619 |
| Blessed Maria (マリア), layperson | Japan | 1619 |
| Blessed Maria (マリア), layperson | Japan | 1619 |
| Blessed Maria (マリア), layperson | Japan | 1619 |
| Blessed Maria Chūjō (マリア ちゅうぞう), layperson | Japan | 1619 |
| Blessed Martha (マルタ), layperson | Japan | 1619 |
| Blessed Martha (マルタ), layperson | Japan | 1619 |
| Blessed Martha (マルタ), layperson | Japan | 1619 |
| Blessed Mencia (メンシア), layperson | Japan | 1619 |
| Blessed Monica (モニカ), layperson | Japan | 1619 |
| Blessed Monica (モニカ), layperson | Japan | 1619 |
| Blessed Monica (モニカ), layperson | Japan | 1619 |
| Blessed Petrus Hashimoto (ペトロ 橋本), layperson | Japan | 1619 |
| Blessed Regina (レジナ), layperson | Japan | 1619 |
| Blessed Rufina (ルフィナ), layperson | Japan | 1619 |
| Blessed Sixtus (シクスト), layperson | Japan | 1619 |
| Blessed Thecla Hashimoto (テクラ 橋本), layperson | Japan | 1619 |
| Blessed Thomas Hashimoto (トマス 橋本), layperson | Japan | 1619 |
| Blessed Thomas Ikegami (トマス 池上), layperson | Japan | 1619 |
| Blessed Thomas Kajiya Yoemon (トマス 与右衛門 鍛冶屋), layperson | Japan | 1619 |
| Blessed Thomas Kian (トマス 喜庵), layperson | Japan | 1619 |
| Blessed Thomas Koshima Shinshirō (トマス こしま しんろう), layperson | Japan | 1619 |
| Blessed Thomas Tōemon (トマス 藤右衛門), layperson | Japan | 1619 |
| Blessed Ursula Sakurai (ウルスラ 桜井如庵), layperson | Japan | 1619 |
| Blessed François Hunot, priest | France | 1794 |
| Blessed Marie-Rose (Eulalie-Mélanie Durocher), religious |  Canada | 1849 |
| Saint Phanxicô Trần Văn Trung, layperson |  Vietnam | 1858 |
| Blessed Isidore of Saint Joseph (Isidore De Loor), religious | Belgium | 1916 |
| Blessed Bernardo (Plácido Fábrega Juliá), religious | Spain | 1934 |
| Blessed Eufrosino María Raga Nadal, religious | Spain | 1936 |
| October 7 |
| Saint Giustina di Padova, layperson | Italy | 304 |
| Saint Mark, pope | Italy | 336 |
| Saint Pallais de Saintes, bishop | France | 596 |
| Saint Martín Cid, abbot | Spain | 1152 |
| Blessed Didacus Hayashida (ヤコブ 林田), layperson | Japan | 1613 |
| Blessed Hadrianus Takahashi Mondo (アドリアン 高橋 水主), layperson | Japan | 1613 |
| Blessed Ioanna Takahashi (ジョアンア 高橋), layperson | Japan | 1613 |
| Blessed Leo Hayashida Sukeemon (レオ 林田 助右衛門), layperson | Japan | 1613 |
| Blessed Leo Takedomi Kan’Emon (レオ 竹富 勘右衛門), layperson | Japan | 1613 |
| Blessed Magdalena Hayashida (マグダレナ 林田), layperson | Japan | 1613 |
| Blessed Martha Hayashida (マルタ 林田), layperson | Japan | 1613 |
| Blessed Paulus Takedomi Dan’Emon (パウロ 竹富 段右衛門), layperson | Japan | 1613 |
| Saint Mary Frances of the Five Wounds (Maria Francesca delle Cinque Piaghe / Anna Maria Rosa Nicoletta Gallo), religious | Italy | 1791 |
| Blessed Jean Hunot, priest | France | 1794 |
| Blessed Giuseppe Toniolo, layperson | Italy | 1918 |
| Blessed Ángel Cuartas Cristóbal, layperson | Spain | 1934 |
| Blessed Gonzalo Zurro Fanjul, layperson | Spain | 1934 |
| Blessed Jesús Prieto López, layperson | Spain | 1934 |
| Blessed José María Fernández Martínez, layperson | Spain | 1934 |
| Blessed Juan José Castañón Fernández, layperson | Spain | 1934 |
| Blessed Mariano Suárez Fernández, layperson | Spain | 1934 |
| Blessed José Llosá Balaguer, priest | Spain | 1936 |
| Blessed Chiara Badano, layperson | Italy | 1990 |
| October 8 |
| Saint Felice di Como, bishop | Italy | 391 |
| Blessed Gunther, bishop | Germany | 941 |
| Saint Ugo Canefri da Genova, religious | Italy | 1233 |
| Blessed John Adams, priest | England | 1586 |
| Blessed John Lowe, priest | England | 1586 |
| Blessed Robert Dibdale, priest | England | 1586 |
| Blessed Alberto (Néstor Vivar Valdivielso), religious | Spain | 1936 |
| Blessed Ángel Andrés (Lucio Izquierdo López), religious | Spain | 1936 |
| Blessed Anselmo (Aniceto Falgueras Casellas), religious | Spain | 1936 |
| Blessed Antolín (Antonio Roig Alibau), religious | Spain | 1936 |
| Blessed Baudillo (Pedro Ciordia Hernández), religious | Spain | 1936 |
| Blessed Bernabé (Casimiro Riba Pi), religious | Spain | 1936 |
| Blessed Carlos Rafael (Carlos Brengaret Pujol), religious | Spain | 1936 |
| Blessed Dionisio Martín (José Cesari Mercadal), religious | Spain | 1936 |
| Blessed Epifanio (Fernando Suñer Estrach), religious | Spain | 1936 |
| Blessed Felipe José (Fermín Latienda Azpilicueta), religious | Spain | 1936 |
| Blessed Félix León (Felíx Ayúcar Eraso), religious | Spain | 1936 |
| Blessed Fortunato Andrés (Fortunto Ruíz Peña), religious | Spain | 1936 |
| Blessed Francisco Alarcón Rubio, priest | Spain | 1936 |
| Blessed Frumencio (Julio García Galarza), religious | Spain | 1936 |
| Blessed Gabriel Eduardo (Segismundo Hidalgo Martínez), religious | Spain | 1936 |
| Blessed Gaudencio (Juan Tubau Perello), religious | Spain | 1936 |
| Blessed Gil Felipe (Felipe Ruíz Peña), religious | Spain | 1936 |
| Blessed Hermógenes (Antonio Badía Andalé), religious | Spain | 1936 |
| Blessed Isaías María (Victoriano Martínez Martín), religious | Spain | 1936 |
| Blessed Ismael (Nicolás Ran Goñi), religious | Spain | 1936 |
| Blessed Jaime Ramón (Jaime Morella Bruguera), religious | Spain | 1936 |
| Blessed José León Montero, layperson | Spain | 1936 |
| Blessed José Ruano López, priest | Spain | 1936 |
| Blessed José Carmelo (Gregorio Faci Molins), religious | Spain | 1936 |
| Blessed José Federico (Nicolás Pereda Revuelta), religious | Spain | 1936 |
| Blessed Juan Crisóstomo (Juan Pelfort Planell), religious | Spain | 1936 |
| Blessed Juan de Mata (Jesús Mechon Franco), religious | Spain | 1936 |
| Blessed Laureano Carlos (Pedro Sitjes Puig), religious | Spain | 1936 |
| Blessed Laurentino (Mariano Alonso Fuente), religious | Spain | 1936 |
| Blessed Leónides (Jerónimo Messegue Ribera), religious | Spain | 1936 |
| Blessed Leopoldo José (Florentino Redondo Insausti), religious | Spain | 1936 |
| Blessed Licarión (Ángel Roba Osorno), religious | Spain | 1936 |
| Blessed Lino Fernando (Víctor Gutiérrez Gómez), religious | Spain | 1936 |
| Blessed Martiniano (Isidro Serrano Fabón), religious | Spain | 1936 |
| Blessed Miguel Ireneo (Leocadio Rodríguez Nieto), religious | Spain | 1936 |
| Blessed Porfirio (Leoncio Pérez Gómez), religious | Spain | 1936 |
| Blessed Prisciliano (José Mir Pons), religious | Spain | 1936 |
| Blessed Ramón Alberto (Feliciano Ayúcar Eraso), religious | Spain | 1936 |
| Blessed Santiago (Serafín Zugaldía Lacruz), religious | Spain | 1936 |
| Blessed Santiago María (Santiago Sáiz Martínez), religious | Spain | 1936 |
| Blessed Santos (Santos Escudero Miguel), religious | Spain | 1936 |
| Blessed Silvio (Victoriano Gómez Gutiérrez), religious | Spain | 1936 |
| Blessed Teódulo (Lucio Zudarie Aramendia), religious | Spain | 1936 |
| Blessed Víctor Conrado (José Ambrós Dejuán), religious | Spain | 1936 |
| Blessed Victorino José (José Blanch Roca), religious | Spain | 1936 |
| Blessed Virgilio (Trifón Lacunza Unzu), religious | Spain | 1936 |
| Blessed Vito José (José Miguel Elola Arruti), religious | Spain | 1936 |
| Blessed Vivencio (Juan Núñez Casado), religious | Spain | 1936 |
| Blessed Vulfrano (Ramón Mill Arán), religious | Spain | 1936 |
| October 9 |
| Saint Ghislain de Mons, abbot | Belgium | 680 |
| Saint Gunther von Thüringen, religious |  Czechia | 1045 |
| Saint Louis Bertrand (Luis Bertrán Eixarch), priest | Spain | 1581 |
| Saint Giovanni Leonardi, priest | Italy | 1609 |
| Saint Aniceto Adolfo (Manuel Seco Gutiérrez), religious | Spain | 1934 |
| Saint Augusto Andrés (Román Martínez Fernández), religious | Spain | 1934 |
| Saint Benito de Jesús (Héctor Valdivieso Sáez), religious | Spain | 1934 |
| Saint Benjamín Julián (Vicente Alonso Andrés), religious | Spain | 1934 |
| Saint Cirilo Beltrán (José Sanz Tejedor), religious | Spain | 1934 |
| Saint Inocencio de la Inmaculada (Manuel Canoura Arnau), priest | Spain | 1934 |
| Saint Julián Alfredo (Vilfrido Fernández Zapico), religious | Spain | 1934 |
| Saint Marciano José (Filomeno López y López), religious | Spain | 1934 |
| Saint Victoriano Pío (Claudio Bernabé Cano), religious | Spain | 1934 |
| October 10 |
| Saint Paulinus of York, bishop | England | 644 |
| Saint Aldric de Sens, archbishop | France | 836 |
| Saint Paolino di Capua, bishop | Italy | 843 |
| Blessed Tuto, bishop | Germany | 930 |
| Saint John of Bridlington (John Twenge), priest | England | 1379 |
| Saint Daniele Comboni, bishop |  Sudan | 1881 |
| Blessed Maria Angela (Zofia Kamila Truszkowska), religious | Poland | 1898 |
| Blessed María Desposorios (María Catalina Irigoyen Echegaray), religious | Spain | 1918 |
| Blessed Pedro Tomás de la Virgen del Pilar (Pedro de Alcantara de Forton de Cascajares), priest | Spain | 1936 |
| Blessed Leone Wetmański, bishop | Poland | 1941 |
