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- Hieromartyr Babylas of Antioch, Bishop of Antioch, and three students, Ammonius, Donatos and Faustus (c. 251 or c. 284) 4 September
- Martyr Babylas of Nicomedia, and with him 84 children (3rd-4th century) 4 September
- Hieromartyr Babylas of Sicily, and his two disciples Martyrs Timothy and Agapius (3rd century) 24 January
- Venerable Babylas of Tarsus in Cilicia 28 December
- Saints Babylus and his wife Comnita, of Nicosa (7th century) 22 February
- Martyr Bacchus (Iacchus, Iakchos), from Triglia, by the sword 17 December
- Monk-Martyr Bacchus the New of St. Sabbas Monastery, by beheading (787) 15 December
- Venerable-Martyr Bacchus, of the Great Lavra of St. Sabbas the Sanctified (8th century) 11 April
- Martyrs Bachtisius, Isaac and Symeon of Persia (339) 16 May
- Venerable Hieromartyr Bademus (Vadim), Archimandrite, of Persia, and 7 disciples (379) 9 April
- Saint Badilo, a monk at Vézelay Abbey in France, he became Abbot of Leuze in Hainault in Belgium (c. 870) West, before the Schism 8 October
- Saint Badulf (Badour, Badolf), a monk and Abbot of Ainay, near Lyon in France (850) West, before the Schism 19 August
- Saint Bain (Bainus, Bagnus), a monk at Fontenelle in France, he became Bishop of Thérouanne (c. 710) West, before the Schism 20 June
- Venerable Baithéne mac Brénaind (Baithin, Comin, Cominus), disciple of St. Columba, Abbot, of Tiree and Iona (c. 600) West, before the Schism 9 June
- Saint Balbina of Rome (c. 130) West, before the Schism 31 March
- Saint Balda, third Abbess of Jouarre in France (7th century) West, before the Schism 9 December
- Saint Baldegundis, Abbess of Saint-Croix in Poitiers in France (c. 580) West, before the Schism 10 February
- Saint Balderic (Baudry), children of Sigebert I, King of Austrasia (7th century) West, before the Schism 16 October
- Saint Baldomerus (Galmier), by trade a locksmith in Lyon in France, who entered the monastery of St Justus (c. 650) West, before the Schism 27 February
- Saint Baldred of Tyninghame (Balther), a priest in Lindisfarne in England who became a hermit at Tyningham on the Scottish border (756) West, before the Schism 6 March
- Saint Baldwin (Baudoin), martyr (c. 680) West, before the Schism 16 October
- Saint Balin (Balanus, Balloin) (7th century) West, before the Schism 7 September
- Saint Balthildes (Bathilda), Queen of France (680) West, before the Schism 30 January
- Saint Bandaridus (Banderik, Bandery), Bishop of Soissons in France from 540 to 566 and founder of a monastery at Crépin West, before the Schism 9 August
- Saint Banthus of Trier, Bishop of Trier in Germany (7th century) West, before the Schism 25 July, 28 July
- Venerable Baradates, hermit near Antioch (469) 22 February
- Virgin-martyr BarBara (Konkina), nun (1938) 23 March
- Greatmartyr Barbara and Martyr Juliana, at Heliopolis in Syria (306) 4 December
- Venerable Barbaros the Myrrhgusher, "the Pentapolitis" (c. 820-829) 23 June
- Martyr Barbarus in Epirus, the former robber (9th century) 6 May
- Saint Barbarus the Myrrh-gusher of Greece (c. 820– 829) 15 May
- Martyrs Barbarus the Soldier (Barbaruldier), Bacchus, Callimachus, and Dionysius, in Morea (362) 6 May
- Saint Barbatianus (Barbatian), Priest and Confessor, at Ravenna (5th century) West, before the Schism 31 December
- Saint Barbolenus, a monk at Luxeuil Abbey and afterwards first Abbot of St Peter's, later St Maur-des-Fossés, in the north of France (c. 677) West, before the Schism 26 June
- Saint Barbolenus, fourth Abbot of Bobbio Abbey in Italy (c. 640) West, before the Schism 31 August
- Saint Bardas, founder of the monastery of the Forerunner in Petra, Constantinople (5th-6th century) 16 May
- Saint Bardo, Abbot of Werden Abbey on the Ruhr, then Abbot of Hersfeld Abbey, also Archbishop of Mainz (1051) West, before the Schism 10 June
- Hieromartyr Bargabdesian, Deacon, at Arbela in Assyria (354) 21 July
- New Hieromartyr Barlaam (Nikolsky), Abbot, of Andreyevskoe, Moscow (1937) 6 November
- Saint Barlaam (Petrov), Metropolitan of Tobolsk and All Siberia (1802) 27 December
- New Hieromartyr Barlaam (Ryashentsev), Archbishop of Perm (1942) 7 February
- Martyr Barlaam of Caesarea in Cappadocia (304) 19 November
- Saint Barlaam of Keret, Karelia (16th century) 6 November
- Venerable Barlaam of Khutyn, founder of Khutyn Monastery, Novgorod (1192) 6 November
- Venerable Barlaam of Kiev, Abbot of the Kiev Caves (1065) 19 November
- Saints Barlaam of Serpukhov, and Gideon of Serpukhov (1377) 5 May
- Venerable Barlaam of Shenkursk, monk (1462) 19 June
- Saint Barlaam, ascetic, of Bald Mountain, near Antioch in Syria (6th century) 18 July
- Saint Barlaam, founder of Chikoisk Monastery, Siberia (1846) 23 January
- Martyr Barlaam, of Caesarea in Cappadocia (c. 303–305) 30 May
- Venerable Barnabas and his nephew Sophronius, founders of Mount Mela Monastery (Panagia Soumela), near Trebizond (412) 18 August
- Venerable Barnabas of Vasa, near Limassol in Cyprus, Wonderworker 11 June
- Venerable Barnabas of Vetluga, ascetic of Vetluga (1445) 11 June
- Venerable Barnabas, Elder of Gethsemane Skete, of St. Sergius Lavra (1906) 17 February
- Saint Barnabas, Elder, of the Gethsemane Skete of St. Sergius Lavra (1906) 6 July
- Saints Barontius and Desiderius (c. 725) West, before the Schism 25 March
- Saint Barrfoin (Bairrfhionn, Barrindus) of Killbarron (6th century) West, before the Schism 21 May
- Saint Barrog (Barrwg, Barnoch, Barry), a disciple of St Cadoc of Wales, hermit (7th century) West, before the Schism 27 September
- Monk-martyr Barsabas, Abbot of Ishtar, and ten companions, in Persia (342) 11 December
- Monk-martyr Barsabas, Abbot, of Ishtar, and ten companions, in Persia (342) 3 June
- Saint Barsabias, abbot and missionary who was martyred in Persia (342) 20 October
- Venerable Barsanuphius (1459) and Sabbas (1467), Abbots of Tver 2 March
- New Hieromartyr Barsanuphius (Lebedev), Bishop of Kyrillov (1918) 2 September
- Saint Barsanuphius of Optina, Elder (1913) 1 April
- Saints Barsanuphius the Great and John the Prophet, monks of Gaza (6th century) 6 February
- Saint Barsanuphius, Bishop of Tver (1576) 11 April
- Saint Barsenorius, Abbot of La-Croix-Saint-Leuffroi in France (7th century) West, before the Schism 13 September
- Saints Barses (378) and Eulogius (c. 386), Bishops of Edessa, and St. Protogenes, Bishop of Carrhae (c. 387), Confessors 25 August
- Saint Barsimaeus the Confessor, Hieromartyr Bishop of Edessa (114) 29 January
- Venerable Barsus the Confessor, Bishop of Edessa (378) 15 October
- New Hieromartyr Bartholomew (Ratnykh), Hieromonk, at Feodosia (Crimea) (1938) 28 January
- Holy Apostles Bartholomew and Barnabas (1st century) 11 June
- Saint Bartholomew the Younger, of Rossano, Calabria (c. 1054) West, before the Schism 11 November
- Prophet Baruch (6th century BC) 28 September
- Martyrs Baruch and John, by the sword 27 March
- Venerable Baruch, reposed in peace 21 October
- Martyr Barypsabas in Dalmatia (2nd century) 10 September
- Saint Basian, Archbishop of Rostov (1516) 25 January
- Venerable Basil 18 November
- Saints Basil (1249) and Constantine (1257), holy princes of Yaroslavl (13th century) 3 July
- Saints Basil (1249) and Constantine (1257), princes of Yaroslavl 5 March
- Blessed Basil (Basilko), Prince of Rostov (1238) 4 March
- New Hieromartyr Basil (Bogoyavlensky), Archbishop of Chernigov 14 August
- New Hieromartyr Basil (Erekaev), Hieromonk of Sarov Monastery (1937) 28 July
- Saint Basil (Kalika or Koleka), Archbishop of Novgorod (1352) 3 July
- Saint Basil (Kishkin), Hieroschemamonk of Glinsk and Ploshchansk hermitages (1831) 27 April
- Venerable Basil (Ratishvili) the Georgian, Wonderworker, of Iveron Monastery, Mt. Athos (13th century) 18 April
- New Hieromartyr Basil (Tsvetkov), Archimandrite, of Stary Kelets, Ryazan (1937) 4 October
- Hieromartyr Basil (Zelentsov), Bishop of Prilutsk, Vicar of Poltava (1930) 22 March
- New Martyr Basil Aleksandrin (1942) 13 August
- New Hieromartyr Basil Amenitsky, Priest (1938) 7 August
- Martyr Basil and 69 other martyrs of Scythopolis 6 July
- Martyrs Basil and Euphrasius, together with other Christians, in Thessaloniki 14 March
- Venerable Basil and Gregory the Wonderworkers, uncles of Saint Eustratius (9th century) 9 January
- Monk-martyrs Basil and Theodore, of the Kiev Caves (1098) 11 August
- Saint Basil Gryaznov of Pavlovo-Posadsky (1869) 16 February
- Saint Basil I the Confessor, Archbishop of Thessalonica (862) 1 February
- Saint Basil I the Macedonian, Byzantine Emperor (886) 29 August
- Saint Basil II the Synaxaristis, Archbishop of Thessalonica (c. 904) 1 February
- New Hieromartyr Basil Infantiev, Priest (1918) 12 August
- New Hieromartyr Basil Ismailov, Archpriest, of Belorussia (1930) 9 February
- Saint Basil Kalika, Archbishop of Novgorod the Great and Pskov (1352) 10 February
- New Hieromartyr Basil Kholmogorov, Archpriest, of Ostrov, Moscow (1938) 3 January
- New Hieromartyrs Basil Koklin, and Stephen Preobrazhensky, Priests (1938) 23 March
- New Hieromartyr Basil Kolosov, Priest (1939) 9 May
- New Hieromartyr Basil Konstantinov-Grishin, priest (1943) 1 March
- New Hieromartyrs Basil Krasivsky and Parthenius Krasivsky, Priests (1919) 3 September
- New Hieromartyr Basil Krylov, priest (1942) 18 May
- New Hieromartyr Basil Krylov, Priest (1938) 6 November
- New Hieromartyr Basil Krymkin, Priest (1942) 21 September
- New Hieromartyr Basil Malahov, Priest (1937) 11 March
- New Hieromartyr Basil Malinin, Archpriest, of Pereslavl (1938) 28 March
- New Hieromartyr Basil Mazurenko, Hieromonk (1938) 26 December
- New Hieromartyr Basil Militsyn, Priest (1918) 25 June
- New Hieromartyr Basil Nadezhnin, priest, of Moscow (1930) 6 February
- Hieromartyr Basil of Amasea, Bishop of Amasea (c. 323) 26 April
- Martyr Basil of Ancyra (362) 1 January
- Hieromartyr Basil of Ancyra, Priest of Ancyra (362) 22 March
- Martyr Basil of Ancyra, under Julian the Apostate (362) 2 January
- Saint Basil of Bologna, Bishop of Bologna in Italy for twenty years, 315-335 West, before the Schism 6 March
- Saint Basil of Jerusalem, Patriarch of Jerusalem (836 or 838) 2 July
- Blessed Basil of Kadom, fool-for-Christ (1848) 2 May
- Blessed Basil of Kamenny Monastery, Lake Kubenskoye, Vologda (1472) 2 August
- Saint Basil of Khakhuli, son of King Bagrat III of Georgia (11th century) 27 May
- Martyr Basil of Mangazea in Siberia, Wonderworker (1602) 22 March
- Righteous Basil of Mangazea in Siberia, Wonderworker (1602) 23 March
- Venerable Basil of Moldovita, Igumen of Moldovița Monastery and Wonderworker (ca. 1455) 15 April
- Blessed Basil of Moscow, Fool-for-Christ (1552) 2 August
- Saint Basil of Ostrog, Wonderworker of Ostrog, myrrh-streamer, Metropolitan of Zahumlje (1671) 29 April
- Basil of Poiana Mărului (1767) 15 April
- Saint Basil of Ryazan, Bishop (1295) 21 May
- Saint Basil of Ryazan, Bishop of Ryazan (1295) 12 April
- Venerable Basil of Trabzon, Bishop of Trabzon (early 10th century) 20 October
- New Martyr Basil Petrov (1942) 2 January
- New Hieromartyrs Basil Pobedonostsev, Peter Zefirov and Stephen Lukanin, Priests (1918) 10 July
- New Hieromartyr Basil Protopopov, Priest (1940) 25 June
- New Martyr Basil Shikalov (1937) 9 September
- New Hieromartyr Basil Sitnikov, Deacon (1918) 28 June
- New Hieromartyrs Basil Smirnov, Alexander Krutitsky, Basil Krylov and Sergius Krotkov, Priests (1938) 18 June
- New Hieromartyr Basil Smolensky, Archpriest, of Kholmets, Moscow (1942) 30 May
- Hieromartyrs Basil Sokolov, Alexander Zaozersky, and Christopher Nadezhdin, Archpriests (1922) 13 May
- New Hieromartyr Basil Sokolov, Deacon (1938) 20 March
- New Hieromartyr Basil Sokolsky, Priest (1937) 28 August
- New Hieromartyr Basil Spassky, Priest, at Tver (1938) 23 December
- New Hieromartyr Basil Sungurov, Priest (1937) 7 September
- Saint Basil the Bishop of Ryazan (1295) 3 July
- Venerable Basil the Confessor (747), companion of St. Procopius, at Decapolis 28 February
- Saint Basil the Confessor, Bishop of Parium (754) 12 April
- Saint Basil the Great, Archbishop of Caesarea in Cappadocia (379) 1 January
- Venerable Basil the Younger, anchorite near Constantinople (944 or 952) 26 March
- New Hieromartyrs Basil Triumfov and Gabriel Preobrazhensky, Priests (1919) 13 February
- Martyrs Basil Vinogradov, Sergius Mikhailov and Spiridon Saveliev (1937) 24 September
- New Hieromartyr Basil Voskresensky, Deacon (1918) 24 September
- New Hieromartyrs Basil Yagodin, Protopresbyter, and Alexander Buravtsev, Priest (1937) 9 December
- Martyrs Basil Yezhov, Peter Lonskov, Stephen Mityushkin and Alexander Blokhin (1937) 4 September
- New Hieromartyr Basil Zalessky, Archpriest, of Astrakhan (1938) 3 February
- New Hieromartyr Basil Zelentsov, Bishop of Priluki (1930) 25 January
- Saint Basil, Abbot of Patalaria Monastery (8th-9th centuries) 22 June
- New Hieromartyr Basil, Archbishop of Chernigov (1918) 1 August
- Saint Basil, Bishop of Aix en Provence (c. 475) West, before the Schism 1 January
- Hieromartyr Basil, Bishop of Hamah (282) 17 November
- Venerable Basil, Elder of Poiana Mărului, Romania (1767) 25 April
- Venerable Basil, founder of the Monastery of the Deep Stream, Cappadocia (10th century) 1 July
- New Hieromartyr Basil, Priest (1939) 7 January
- New Hieromartyr Basil, priest, Virgin-martyr Vera Samsonov (1940) 1 June
- Martyr Basilides the Soldier, at Alexandria (202) 30 June
- Saints Basilides, Cyrinus, Nabor and Nazarius, and those with them, soldiers, at Rome (304) 12 June
- Saints Basilides, Tripos, Mandal and Companions, a group of twenty-three Orthodox martyred in Rome on the Aurelian Way under Aurelian (c. 270–275) West, before the Schism 10 June
- Martyr Basiliscus of Comana (c. 308) 22 May
- Martyr Basiliscus the Elder, by the sword 29 July
- Venerable Basilisk (Basiliscus) the Hesychast of Turinsk, Siberia (1824) 29 December
- Martyrs Basilissa and Anastasia of Rome, disciples of Apostles Peter and Paul (c. 68) 15 April
- Martyr Basilissa of Nicomedia (309) 3 September
- Saint Basilissa, Abbess of Oehren near Trier in Germany (c. 780) West, before the Schism 5 December
- Virgin-martyr Basilla (304) West, before the Schism 20 May
- Saint Basinus, monk and Abbot of St Maximin in Trier in Germany, succeeded St Numerian as bishop of the city (ca. 705) West, before the Schism 4 March
- Saint Basolus (Basle), a French Benedictine monk at Verzy near Rheims, then a hermit for forty years on a hill near the city, confessor, wonderworker (c. 620) West, before the Schism 26 November
- Saint Bassa (Vassa), Patrician and Igumenia of a female monastery in Jerusalem, where she also founded the Monastery of Saint Menas, whose Abbot was the... (5th century) 9 December
- Martyr Bassa of Edessa and her sons Theognius, Agapius, and Pistus (305-311) 21 August
- Saint Bassa of Jerusalem, Abbess (5th century) 7 December
- Martyr Bassa of Tyre 21 September
- Saint Bassa, nun, of the Pskov-Caves Monastery (1473) 19 March
- Virgin-martyrs Bassa, Paula and Agathonica, in Carthage in North Africa West, before the Schism 10 August
- Venerable Bassian (Balashevich) the Blind, Hiero-schema-monk of the Kiev Caves (1827) 25 April
- Saint Bassian of Constantinople (c. 458) 10 October
- Venerable Bassian of Tiksna in Vologda (1624-1633) 12 September
- Saint Bassian, Archbishop of Rostov (1481) 23 March
- Saint Bassian, Bishop of Lodi, Lombardy (413) West, before the Schism 19 January
- Saint Bassian, founder and Abbot of Ryabovsky Forest Monastery in Uglich (1509) 12 February
- Saint Bassianus of Lodi, Bishop of Lodi in Lombardy (409) West, before the Schism 10 June
- Martyrs Bassus and 42 companions in Heraclea in Thrace 20 November
- Saint Bassus of Nice, Bishop of Nice, martyred under Decius, his body transfixed with two huge nails (c. 250) West, before the Schism 5 December
- Martyrs Bassus, Anthony, and Protolicus, at Alexandria West, before the Schism 14 February
- Martyrs Bassus, Eusebius, Eutychius, and Basilides, at Nicomedia (303) 20 January
- Venerable Hieromartyr Batas of Nisibis (Bata the Persian) (c. 364) 1 May
- Saint Baudacarius, A monk at Bobbio Abbey in the north of Italy (650) West, before the Schism 21 December
- Hieromartyr Baudelius, missionary in France and northern Spain, martyred in Nîmes (2nd or 3rd century) West, before the Schism 20 May
- Saint Bavo of Ghent, penitent and hermit, confessor and patron of Haarlem in the Netherlands (659) West, before the Schism 1 October
- Saints Baya (Bava) and Maura, Anchoresses in Scotland; St Bava guided St Maura and the latter became abbess of a convent (c. 10th century) West, before the Schism 2 November
- Saint Beatus of Liébana, a monk at Liebana and was famous for his firm stand against Adoptionism (789) West, before the Schism 19 February
- Saint Beatus, Apostle of Switzerland (2nd century) West, before the Schism 9 May
- Saint Bécán (Began), one of the 'Twelve Apostles of Ireland' (6th century) West, before the Schism 5 April
- Saint Bécán, a hermit near Cork in Ireland, founder of Kilbeggan, Westmeath (6th century) West, before the Schism 26 May
- Saint Beccan of Rhum (677) West, before the Schism 17 March
- Venerable Bede the Confessor, Hieromonk and Chronicler, of Monkwearmouth–Jarrow Abbey (735) West, before the Schism 27 May
- Venerable Bede the Confessor, Hieromonk of Wearmouth-Jarrow (735) West, before the Schism 25 May
- Saint Bede the Younger, a court official who became a monk at the monastery of Gavello near Rovigo (883) West, before the Schism 10 April
- Saint Begga of Landen, founder and Abbess of a convent in Andenne on the Meuse in Belgium (698) West, before the Schism 17 December
- Saint Begu, a nun at Hackness in Yorkshire in England (c. 660) West, before the Schism 31 October
- The Beheading of the Glorious Prophet, Forerunner, and Baptist John (ca. 28) 29 August
- Saint Benedict Biscop, Abbot of Wearmouth and Confessor (690) West, before the Schism 12 January
- Saint Benedict Crispus of Milan, Archbishop of Milan in Italy for forty-five years (725) West, before the Schism 11 March
- Saint Benedict II, Pope of Rome (685) West, before the Schism 8 May
- Saint Benedict of Angers, Bishop of Angers in the west of France (c. 820) West, before the Schism 15 July
- Saint Benedict of Aniane, monastic reformer (821) West, before the Schism 11 February
- Saint Benedict of Campania (Benedict the Hermit), hermit in the Campagna in Italy, miraculously delivered from death by burning at the hands of Totila the Goth (550) West, before the Schism 23 March
- Saint Benedict of Massérac (Benoît de Macérac), a Greek abbot who fled from Petras and settled in Macerac near Nantes in France (845) West, before the Schism 22 October
- Venerable Benedict of Nursia, Abbot (543) West, before the Schism 14 March
- Saint Benedict of Sebaste, Bishop of Sebaste in Samaria, who fled to Gaul and built a hermitage near Poitiers (c.654) West, before the Schism 23 October
- Hieromartyr Benedict of Serres and Thessaloniki, priest, by beheading, and other monk-martyrs with him (1821) 12 June
- Saint Benedict of Szkalka, a hermit on Mount Zobor in Hungary, disciple of St. Andrew Zorard, renowned for his asceticism, murdered by robbers (1012) West, before the Schism 1 May
- Saint Benedict Revelli, a monk at Santa Maria dei Fonti in Italy, then a hermit on the island of Gallinaria in the Gulf of Genoa, became Bishop of Albenga... (c. 900) West, before the Schism 12 February
- Saints Benedict, John, Matthew, Isaac and Christinus (Christian), monks from Italy who followed St Adalbert of Prague, murdered at their monastery near... (1005) West, before the Schism 12 November
- Saint Benedicta (Beata), sister of Sts Augustine and Sanctian, all three were born in Spain but went to France and were martyred in Sens under Aurelian (273) West, before the Schism 29 June
- Saint Benedicta and Cecilia, two daughters of the King of Lorraine, became nuns and successively Abbesses of Susteren Abbey, in the Rhineland, Germany (10th century) West, before the Schism 17 August
- Saint Benedicta, a virgin-martyr in Laon in France West, before the Schism 8 October
- St. Benedicta, virgin, mystic and nun, lived in a convent founded by St. Galla in Rome (6th century) West, before the Schism 6 May
- Saint Benignus of Armagh (Benen), Bishop of Armagh (468) West, before the Schism 9 November
- Saint Benignus of Dijon, Priest and Apostle, of Burgundy (c. 272) West, before the Schism 1 November
- Saint Benignus of Milan, Archbishop of Milan (c. 477) West, before the Schism 20 November
- Saint Benignus of Todi, a priest in Todi in Umbria in Italy martyred under Diocletian (c. 303) West, before the Schism 13 February
- Saint Benignus, a monk and Abbot of Fontenelle Abbey (725) West, before the Schism 20 March
- Saint Benignus, Bishop of Utrecht in Holland (6th century) West, before the Schism 28 June
- Saint Benildis, martyr of Córdoba, Spain (853) West, before the Schism 15 June
- New Hieromartyr Benjamin (Kononov), Archimandrite, of Solovki Monastery (1928) 4 April
- New Hieromartyr Benjamin (Voskresensky), Bishop of Romanov (1932) 22 September
- Martyrs Benjamin and Berius, by the Palace of the Hebdomon 29 July
- New Hieromartyr Benjamin of Petrograd, Metropolitan, and those with him (1921) 13 August
- Venerable Benjamin of the Kiev Caves (14th century) 13 October
- Hieromartyr Saint Benjamin the Deacon and Martyr, of Persia (421–424) 13 October
- New Hieromartyr Benjamin, Bishop of Romanov (1930) 15 January
- New Hieromartyr Benjamin, Hieromonk (1938) 18 February
- Venerable Benjamin, Monk of Nitria in Egypt (392) 29 December
- Saint Benno, hermit on Mt Etzel in Switzerland, a founder of the monastery of Einsiedeln, became Bishop of Metz in 927 (940) West, before the Schism 3 August
- Saint Beoadh (Beatus), Bishop of Ardcarne in Roscommon in Ireland (c. 518) West, before the Schism 8 March
- Saint Beóán of Mortlach (Bean), Bishop of Mortlach in Banff in Scotland, he later preached in Aberdeen (c. 1012) West, before the Schism 26 October
- Martyrs Beocca, Ethor and others, at Chertsey Abbey, by the Danes (869) West, before the Schism 10 April
- Saint Beornwald of Bampton (Bernwald), a righteous priest in Bampton in Oxfordshire in England (10th century) West, before the Schism 21 December
- Saint Berach (Barachias, Berachius), disciple of St Kevin and founder of a monastery at Clusin-Coirpte in Connaught (6th century) West, before the Schism 15 February
- Saint Berarius, Bishop of Le Mans in France (c. 680) West, before the Schism 17 October
- Saint Bercharius, a monk at Luxeuil Abbey and first Abbot of Hautvillers and martyr (696) West, before the Schism 16 October
- Saint Bercthun (Bertin), a disciple of St John of Beverley and first Abbot of Beverley in England (733) West, before the Schism 15 May
- Saint Beregisus, a priest who founded the monastery of Saint Hubert in the Ardennes in France (c. 725) West, before the Schism 2 October
- Saint Berhtwald (Brithwald, Brihtwald), a monk and then the Abbot of Reculver in Kent, and in 693 becoming the ninth Archbishop of Canterbury (731) West, before the Schism 9 January
- Saint Berlinda of Meerbeke (Berlindis, Bellaude), a niece of St Amandus, she became a nun at Moorsel near Alost in Belgium, and later an anchoress in Meerbeke (702) West, before the Schism 3 February
- Saint Bernard of Arce, Confessor (9th century) West, before the Schism 14 October
- Saint Bernard of Bagnorea (of Castro), Bishop of Vulcia in Tuscany, Italy (c. 800) West, before the Schism 20 October
- Saint Berno, first Abbot of Cluny and initiator of the Cluniac reforms which spread across Europe (927) West, before the Schism 13 January
- Saint Bernold, monk-priest of Ottobeuren Abbey in Bavaria in Germany, renowned as a wonderworker (c. 1050) West, before the Schism 25 November
- Saint Bernulphus, Bishop of Utrecht (1054) West, before the Schism 24 July
- Saint Bernward of Hildesheim, Bishop of Hildesheim in Germany (1022) West, before the Schism 20 November
- Saint Bertha of Artois (Bertha of Blangy), a Frankish and Anglo-Saxon Abbess of noble blood (c. 725) West, before the Schism 4 July
- Saint Bertha of Bingen (c. 757), and her son Saint Rupert of Bingen (732) West, before the Schism 15 May
- Saint Bertha of Val d'Or, martyr, founder and abbess of Avenay in the diocese of Châlons-sur-Marne (680) West, before the Schism 1 May
- Saint Berthaldus (Bertaud), a hermit in the Ardennes in France, who was ordained priest by St Remigius of Reims (c. 540) West, before the Schism 16 June
- Saint Berthanc (Berchan), a monk at Iona in Scotland and later Bishop of Kirkwall in Orkney (c. 840) West, before the Schism 6 April
- Saint Bertharius, a Benedictine abbot of Monte Cassino, martyred together with several of his monks by invading Saracens (884) West, before the Schism 22 October
- Saint Berthoald, Fifth Bishop of Cambrai-Arras in France (7th century) West, before the Schism 13 October
- Saint Bertilia of Mareuil, anchoress (c. 687) West, before the Schism 3 January
- Saint Bertilla (Berthild of Chelles), a nun at Jouarre near Meaux in France, who became Abbess of Chelles Abbey (c. 705) West, before the Schism 5 November
- Saint Bertilo, Abbot of St Benignus Abbey in Dijon in France, martyred with several of his monks at the altar when the Vikings sacked the monastery (ca. 878-888) West, before the Schism 26 March
- Saint Bertin, Abbot of Sithin (afterwards called Abbey of Saint Bertin) (c. 709) West, before the Schism 5 September
- Saint Bertinus the Younger, Benedictine monk at Sithin, in France (699) West, before the Schism 2 May
- Saint Bertoara, Abbess of Notre-Dame-de-Sales in Bourges (614) West, before the Schism 4 December
- Saint Bertram (Bertelin, Bettelin, Beorhthelm), Wonderworker of Ilam & Stafford, England (8th century) West, before the Schism 10 August
- Saint Bertrand (Bertram, Bertran, Ebertram), a disciple of Saint Bertinus, helped Saint Omer enlighten the north of France and Flanders, later became Abbot... (7th century) West, before the Schism 24 January
- Saint Bertrand, Bishop of Le Mans (623) West, before the Schism 30 June
- Saint Bertuin, born in England, he became a monk at Othelle, then a bishop, and founded the monastery of Malonne Abbey near Namur in Belgium (c. 698) West, before the Schism 11 November
- Saint Bertulf of Bobbio, a monk at Luxeuil in France, then went to Bobbio in Italy where he became abbot on the repose of St Attalas (640) West, before the Schism 19 August
- Saint Bertulf of Renty (O.S.B.) (705) West, before the Schism 5 February
- Saint Beryllus, Bishop of Catania (c. 90) West, before the Schism 21 March
- Saints Bessarion (Sarai), Hieromonk (1745), and Sophronius of Ciorara, monk (c. 1765), Confessors, and St. Oprea of Săliște (18th century), martyred by the... 21 October
- Venerable Bessarion (Vissarion) Korkoliakos of Agathonos Monastery (1991) 22 January
- Saints Bessarion I (1490-1499) and Bessarion II (1527-1540), Metropolitans of Larissa 15 September
- Hieromartyr Bessarion of Smolyan, Bulgaria (1670) 29 July
- New Hieromartyr Bessarion Selinin, Priest (1918) 18 April
- Venerable Bessarion the Great, Wonderworker of Egypt (466) 20 February, 6 June, 17 June
- Venerable Betimius (Bitimionus, Vitimionus) of Scetis (Scete) (5th century) 24 December
- Saint Bettelin (Beccel), Hermit of Crowland (8th century) West, before the Schism 9 September
- Saint Betto, a monk at Sainte Colombe in Sens in France, who became Bishop of Auxerre in 889 (918) West, before the Schism 24 February
- Saint Beuno, Abbot, of Clynnog Fawr, Wales (642) West, before the Schism 21 April
- Saint Beya (Bega, Begh, Bee), Virgin, first Abbess of Copeland in Cumbria (7th century) West, before the Schism 6 September
- Martyrs Bianor and Silvanus (Silouan), of Pisidia (4th century) 10 July
- Saint Bibiana (Vibiana, Vivian, Viviana), a holy virgin martyred in Rome (c. 361-363) West, before the Schism 2 December
- Martyrs Bidzina, Elizbar, and Shalva, Princes of Ksani, Georgia (1660) 18 September
- Saint Bieuzy, born in Britain, he followed St Gildas to Brittany and was martyred there (7th century) West, before the Schism 24 November
- Saint Bilfrid (Billfrith), a hermit at Lindisfarne and an expert goldsmith, who bound in gold the Lindisfarne Gospels, written and illuminated by Bishop Edfrith (8th century) West, before the Schism 6 March
- Saint Bilihildis, foundress of the convent of Altenmünster in Mainz (c. 710) West, before the Schism 27 November
- Saint Birinus, Bishop of Dorchester, "Apostle to the West Saxons" (649) West, before the Schism 3 December
- Saint Birnstan of Winchester (Beornstan), Bishop of Winchester in England, who loved to pray for the departed (c. 934) West, before the Schism 4 November
- Bishop Urban of Macedonia 29 November
- New Hieromartyrs Bishop Victorin and Priest Basil Luzgin, of Glazomicha (1918) 2 November
- Saints Bitheus and Genocus, two monks from Britain who accompanied St Finian of Clonard to Ireland (6th century) West, before the Schism 18 April
- Saint Bláán (Blane), Bishop of Bute, Scotland (c. 590) West, before the Schism 11 August
- St. Bladus (Baldus), an early Bishop of the Isle of Man West, before the Schism 3 July
- Saint Blaesilla, a daughter of Saint Paula (383) West, before the Schism 22 January
- Saint Blaise and Demetrius, martyrs in Veroli in central Italy West, before the Schism 29 November
- Saint Blaise of Amorion and Mt. Athos (c. 908) 18 February
- Venerable Blaise of Amorium and Mount Athos (c. 909) 31 March
- Martyr Blaise of Caesarea in Cappadocia (3rd century) 3 February
- Saint Blaise the Hieromartyr of Acarnania (Vlasios of Sklavaina) (1006) 11 February
- Saint Blaise, Bishop 22 February
- Hieromartyr Blaise, Bishop of Sebaste (316) 11 February
- Saint Blaithmaic (Blathmac), an Abbot from Ireland, went to Scotland and was martyred by the Danes on the altar steps of the church of Iona (c. 823) West, before the Schism 15 January
- Saint Blane (Blaan, Blain), a disciple of Sts Comgall and Canice in Ireland, he was a bishop in Scotland, was buried at Dunblane which was named after him (6th century) West, before the Schism 10 August
- Saint Blath (Flora), a cook at St Brigid's convent in Kildare where she was honoured as a holy woman (523) West, before the Schism 29 January
- Saint Blidulf (Bladulf), a monk at Bobbio Abbey, Italy who bravely denounced the heresy of the Lombard King Ariovald, an Arian (c. 630) West, before the Schism 2 January
- The blind man healed by St. Panteleimon and beheaded for Christ (4th century) 27 July
- Saint Blinlivet (Blevileguetus), the twenty-fifth Bishop of Vannes in Brittany (9th century) West, before the Schism 7 November
- Saint Blitharius (Blier), born in Scotland, he went to France and settled in Seganne in Champagne (7th century) West, before the Schism 11 June
- Saint Blitmund, a monk at Bobbio Abbey in Italy (c. 660) West, before the Schism 3 January
- Saint Blondina Gobjilă (Blondina of Iași, Mama Blondina), a Confessor from the communist period who was exiled to Siberia for 15 years (1971) 24 May
- Saint Boadin the Irish, hermit in Gaul West, before the Schism 11 January
- Saint Bobinus, monk at Moutier-la-Celle. Later he became Bishop of Troyes (c. 766) West, before the Schism 31 January
- Saint Bobo (Beuvon), hermit (c. 985) West, before the Schism 22 May
- Saint Bodagisil, founded and was the first Abbot of a monastery on the Meuse in Belgium (588) West, before the Schism 18 December
- Venerable Bodfan (Bobouan), patron saint of Abern in Gwynedd in Wales (7th century) West, before the Schism 2 June
- Saint Bodo (Leudinus), Bishop of Toul () West, before the Schism 11 September
- Saint Boetharius (Betharius, Bethaire), Bishop of Chartres in France, he was present at the Council of Sens (623) West, before the Schism 2 August
- Saint Boethian of Pierrepont (near Laon), Irish, Benedictine monk, martyred in France (7th century) West, before the Schism 22 May
- Saint Bogolep of St. Paisius of Uglich Monastery (16th century) 22 August
- Saint Bogolep, Child Schemamonk of Chorny Yar, near Astrakhan (1667) 29 July
- Venerable Bogolep, child schemamonk, of Chorny Yar (Black Ravine), near Astrakhan (1654 or 1667) 24 July
- Saint Boisil of Melrose Abbey (664) West, before the Schism 24 February
- Saint Bolcan (Olcan), baptised by St Patrick, Bolcan later became Bishop of Derkan in Ireland (c. 480) West, before the Schism 20 February
- Saint Bolonia, a holy virgin aged fifteen and martyred under Julian the Apostate (362) West, before the Schism 16 October
- Saint Bond (Baldus), born in Spain, he became a hermit in Sens in France (7th century) West, before the Schism 29 October
- Hieromartyr Boniface (Wynfrith), Archbishop of Mainz and Enlightener of Germany, and those martyred with him (754) West, before the Schism 5 June
- Saints Boniface and Thecla, parents of the Twelve Brothers commemorated on September 1 (c. 250) West, before the Schism 30 August
- Martyr Boniface at Tarsus in Cilicia (290), and Righteous Aglae (Aglais, Aglaida) of Rome (c. 303) 19 December
- Saint Boniface Curetán, a Scoto-Pictish Bishop of Ross (c. 630 or 660) West, before the Schism 14 March
- Saint Boniface I, a priest who was elected Pope of Rome in 418 (422) West, before the Schism 4 September
- Saint Boniface of Tarsus, martyr (307) 14 May
- Saint Boniface the Merciful, Bishop of Ferentino (6th century) 19 December
- Venerable Boniface, Abbot, of Theofania, Kiev (1871) 7 February
- Saint Boniface, Bishop of Ferentino in Tuscany (6th century) West, before the Schism 14 May
- Saint Boniface, one of the martyrs with St Palmatius and Companions in Trier in Germany (c. 287) West, before the Schism 5 October
- Saint Bonitus, Bishop of Clermont and Confessor, later a monk (c. 710) West, before the Schism 15 January
- Saint Bonitus, fourth Abbot of Monte Cassino (c. 582) West, before the Schism 7 July
- Saint Bononius, Abbot of Lucedio in Piedmont (1026) West, before the Schism 30 August
- New Hieromartyr Boris (1942) 12 November
- Holy Martyrs and Passion-bearers Boris and Gleb of Russia, in holy baptism Romanus and David (1015) 24 July
- New Hieromartyr Boris Semenov, Deacon (1931–1934) 10 November
- Saint Boris Talantov of Kostroma, Soviet teacher, participant in the dissident movement in the USSR, church publicist and political prisoner (1970–1971) 22 December
- Martyr Boris Uspensky (1942) 2 December
- New Hieromartyr Boris Voskoboinikov, Bishop of Ivanovo (1937) 23 November
- New Martyr Boris Zavarin (1938) 25 January
- Saint Boris-Michael, Prince and baptizer of Bulgaria, Equal-to-the-Apostles (907) 2 May
- Saint Boros, monk 21 May
- Saint Bosa of York, Bishop of York (705) West, before the Schism 9 March
- New Martyr Bosiljka Rajičić (18th century) 13 October
- Saint Boswell (Boisil), Abbot of Melrose Abbey in Scotland (c. 661) West, before the Schism 23 February
- Saint Botolph, Abbot and Confessor, of Ikanhoe, England (680), and his brother, Saint Adolph the Confessor, Bishop of Maastricht (7th century) West, before the Schism 17 June
- Saints Bova and Doda (7th century) West, before the Schism 24 April
- Saints Bradan and Orora, two saints venerated in the Isle of Man (c. 7th century) West, before the Schism 20 October
- Saint Brandan, Abbot, opponent of Pelagianism (5th century) West, before the Schism 11 January
- New Hieromartyr Branko Dobrosavljević, Serbian Orthodox priest who fell victim to Ustaše (1941) 24 April
- Saint Brannock of Braunton (Brannocus, Brynach), England (6th century) West, before the Schism 7 January
- Saint Branwalader (Breward) of Cornwall, Bishop in Jersey in the Channel Islands (6th century) West, before the Schism 19 January
- Saint Braulio of Saragossa in Iberia, Bishop and Confessor (646) West, before the Schism 26 March
- Venerable Breaca, a disciple of Saint Brigid who crossed from Ireland to Cornwall (c. 460) with several companions (5th-6th centuries) West, before the Schism 4 June
- Saint Bregwin, Twelfth Archbishop of Canterbury (764) West, before the Schism 24 August
- Saint Brendan of Birr (571) West, before the Schism 29 November
- Saint Brendan the Navigator, abbot of Clonfert (c. 577) West, before the Schism 16 May
- Saint Bretanion (Vetranion), Bishop of Tomis in Moesia, Confessor (c. 380) 25 January
- Saint Briarch, born in Ireland, became a monk in Wales with Saint Tudwal, whom he accompanied to Brittany, built a monastery in Guingamp and reposed in Bourbiac (c. 627) West, before the Schism 17 December
- Saint Briavel, a hermit at St Briavels, now in Gloucestershire in England (6th century) West, before the Schism 17 June
- Saint Bricius (Brice, Britius, Brixius), Bishop of Tours (444) West, before the Schism 13 November
- Saint Brictius, Bishop of Martola near Spoleto in Umbria in Italy (c. 312) West, before the Schism 9 July
- Saint Brigid (Briga) of Kilbride, venerated around Lismore, Ireland (6th century) West, before the Schism 21 January
- Saints Brigid and Maura, daughters of a Scottish Chieftain, Martyrs in Picardy while on pilgrimage to Rome West, before the Schism 28 January
- Venerable Brigid of Kildare (524) West, before the Schism 1 February
- Saint Brigid the Younger, sister of St Andrew the Scot, Abbot of St. Donatus in Fiesole in Tuscany in Italy (9th century) West, before the Schism 1 February
- Saint Brioc, Abbot of St. Brieuc (c. 502) West, before the Schism 1 May
- Saint Brithwald (Bertwald), Bishop of Ramsbury (1045) West, before the Schism 22 January
- Saint Brito (Britonius) (386) West, before the Schism 5 May
- Saint Bron, a disciple of St Patrick and Bishop of Cassel-lrra near Sligo in Ireland (c. 511) West, before the Schism 8 June
- Saint Brónach (Bromana), called the Virgin of Glen-Seichis, now Kilbronach in Ireland West, before the Schism 2 April
- Saints Brothen and Gwendolen (6th century) West, before the Schism 18 October
- Saint Bruno of Merseburg (Bruno-Boniface), Archbishop of Mersburg, martyred by the heathen Prussians (1009) West, before the Schism 15 October
- Saint Bruno of Querfurt (Bruno-Boniface), a missionary bishop, the second "Apostle of the Prussians" (1009) West, before the Schism 19 June
- Saint Bruno of Würzburg (Bruno of Carinthia), Bishop of Würzburg (1045) West, before the Schism 27 May
- Saint Bruno the Great, Bishop of Cologne in Germany (965) West, before the Schism 11 October
- Saint Bruno, a holy man at the monastery of Ottobeuren Abbey in Bavaria in Germany (1050) West, before the Schism 24 December
- Saint Bryaene of Nisibis (318) 30 August
- Saint Brychan, a King in Wales with twenty-four saintly children (5th century) West, before the Schism 6 April
- Venerable Brynach of Wales (Brenach, Bemach, Bemacus) (6th century) West, before the Schism 7 April
- Saint Budoc (Budeaux), born in Brittany, became Abbot of Youghal in Ireland, then Bishop of Dol in Brittany (7th century?) West, before the Schism 9 December
- Saint Budoc (Budock), Bishop of Dol and Plourin (6th century) West, before the Schism 8 December
- Saint Buithe (Buite, Boethius), founder of Monasterboice in Ireland (521) West, before the Schism 7 December
- Venerable Bukolus, Bishop of Smyrna (c. 100) 6 February
- Saint Burchard of Würzburg, first Bishop of Wurzburg (754) West, before the Schism 2 February
- Saint Burchard of Würzburg, first Bishop of Wurzburg, English missionary to Germany (754) West, before the Schism 14 October
- Saint Burchard, monk at Lobbes Abbey in Belgium, then became Bishop of Worms where he was a canonist (1026) West, before the Schism 20 August
- Saint Burgundofara (Fara), founder of Faremoutiers Abbey (657) West, before the Schism 7 December
- Burial of Saint Alexander Nevsky (in schema Alexis), Grand Prince of Novgorod (1263) 23 November
- Burial of St. Andrew, Prince of Bogolubovo (1174) 4 July
- Saint Buriana, born in Ireland, she lived as an anchoress in Cornwall (6th century) West, before the Schism 4 June
- Martyr Busiris, martyred by women with knitting needles 31 December
- St. Byblig of Carnarvon (Biblig, Peblig, Piblig, Publicius), Gwynedd, in Wales West, before the Schism 3 July
- Saint Byzantinos 25 September