| Habib of Edessa, Deacon and Martyr |
| Hadulph, Benedictine bishop of Arras, Cambrai |
| Hallvard Vebjornsson, Martyr, Patron of Oslo, Norway |
| Hamo (Aymo) of Savigny, Benedictine Monk |
| Haralambos (Charalambos), Bishop of Magnesia, Martyr |
| Hedda, Bishop of the West Saxons, Abbot of Malmesbury |
| Hedistus, Priest, Martyred at Perinthus (Heraclea) on the Propontis (Marmora) |
| Hedwig (Jadwiga), Queen of Poland |
| Hedwig, Duchess of Silesia |
| Hegesippus of Jerusalem, Ecclesiastical Writer |
| Helen Enselmini, Poor Clare |
| Helena, Empress, Mother of Constantine I |
| Heliconis of Thessalonika, Virgin and Martyr |
| Heliodorus, Bishop of Antino |
| Heliodorus, Martyr |
| Helladius, Bishop |
| Helladius, Bishop of Auxerre |
| Hemetrius, Martyr |
| Hemma of Gurk, Austrian Lay Woman and Foundress |
| Henry Garnet, English Jesuit Priest, Martyr |
| Henry II, Holy Roman Emperor |
| “Henry V”, Count of Chambord, never accepted as King of France (from his hair) |
| Henry Morse, English Jesuit Priest, Martyr |
| Henry Suso (Heinrich Seuse), Dominican Priest, Great German Mystic |
| Henry Walpole, Jesuit Priest, Martyr |
| Henry, English Bishop of Upsala, Sweden, Apostle to Finland, Martyr |
| Heracles, Bishop of Alexandria |
| Herculanus, Bishop of Perugia |
| Herculanus, Soldier and Martyr |
| Heribert, Bishop of Cologne |
| Hermann Joseph, Norbertine Priest |
| Hermelind, Abbot of Aindre |
| Hermenegild, Visigothic Prince, Martyr |
| Hermes, Greek, Martyred in Rome |
| Hermias of Comana, Cappadocia, Soldier and Martyr |
| Hermogenes, Patriarch of Moscow, Martyr |
| Herve' (Hyvarnion) of Brittany, Welsh blind bard, hermit, exorcist |
| Hesperus, Martyr |
| Hesychius, first Bishop of Cazorla (Cartela), Spain, Martyr |
| Hesychius Palatinus, Senator, Martyred in Antioch |
| Hilaria of Augsburg, Mother of St. Afra, Martyr |
| Hilarion the Great, of Gaza in Palestine |
| Hilarion, Greek Metropolitan of Kiev |
| Hilarion, Martyr |
| Hilarius, Bishop of Aquilaea |
| Hilarius, Bishop of Carcasonne |
| Hilarius, Bishop of Mainz, Martyr |
| Hilary of Poitiers, Bishop and Father of the Church |
| Hilary, Bishop of Arles |
| Hilary, Bishop of Toulouse |
| Hilary, Greek Martyr |
| Hilary, Martyr |
| Hilda, Abbess of Whitby |
| Hildegard of Bingen, Benedictine Abbess, Mystic, Composer, Physician |
| Hilduard, Regional Bishop of Flanders |
| Himerius, Bishop of Ameria and Martyr |
| Himerius, Bishop of Susingen, near Basle |
| Hipacio, Abbot of Rufini |
| Hippolytus of Rome, Soldier and Martyr |
| Hippolytus of Rome, Theologian, Priest, for eighteen years an Anti-pope, Martyr |
| Holy Cross of Christ |
| Holy Innocents (one of them) |
| Holy Maccabee Children (one of them) |
| Homobonus Tucenghi of Cremona, Confessor |
| Honestus of Nimes, Priest, Missionary to Navarre, Martyred in Pamplona |
| Honorat (Florentyn Waclaw Jan Stefan) Kozminski, of Biala, Polish Capuchin Priest |
| Honorata, Nun at Pavia |
| Honoratus |
| Honoratus (Honoré), Founding Abbot of Lérins, Bishop of Arles |
| Honoratus (Onorato), Bishop of Milan |
| Honorius, Archbishop of Canterbury |
| Honorius, Martyr |
| Honorius, Martyred at Gerona |
| Hormisdas, Pope |
| Hortulanus, Bishop of near Tripoli |
| Hospitius of Niza, Egyptian Hermit |
| Hrabanus Maurus, Bishop of Mainz |
| Hubert, Monk of Bretigny, Confessor |
| Hugh Canefro, Priest and Chaplain of the Knights of St. John of Jerusalem |
| Hugh of Avalon, Bishop of Lincoln |
| Hugh the Great, Abbot of Cluny |
| Hugh, Bishop of Grenoble |
| Little Hugh of Lincoln, boy whose murder was falsely charged to the Jews |
| Hugo Uguccio Lippi, One of the Seven Holy Founders of the Servite Order |
| Humbeline, sister of St. Bernard of Clairvaux, Benedictine Abbess of Jully-les-Nonnais |
| Humfrid (Humphrey), Bishop of Therouanne |
| Hungarius (Hungero), Bishop of Utrecht |
| Hyacinth (Jacek) Odrowaz, Dominican Priest |
| Hyacinth of Rome, Brother of Protus, Martyr |
| Hyacintha Mariscotti, Franciscan Nun |
| Hyacinthe-Marie Cormier, Priest, 76th Father General of the Dominican Order (autograph) |
| Hyginus, Pope |
| Hypatius the Wonderworker, Bishop of Gangra, Martyr |
