| Fabian, Pope and Martyr |
| Fabiola of Rome, Matron |
| Fabricio, Bishop of Porto, Portugal |
| Fabricius, Martyr |
| Facanan (Fachtna), First Bishop of Ross, Ireland |
| Facundus, Martyr |
| Faith (Foi), Virgin, Martyred at Agen, France |
| Famianus of Gallese (near Compostela) Cistercian Priest |
| Fanchea, Abbess of Rossory, Ireland |
| Faron, Bishop of Meaux |
| Fausta, Martyr |
| Fausta, Matron (Mother of St. Anastasia of Sirmium) |
| Fausta, Widow |
| Faustina Kowalska, Nun who experienced the Divine Mercy apparitions |
| Faustina, Martyr |
| Faustinus of Brescia, Priest and Martyr |
| Faustinus, Bishop of Bologna |
| Faustus, Bishop of Riez |
| Faustus, Martyr |
| Febadius, Bishop of Agen |
| Febronia of Nisibis, Virgin and Martyr |
| Felicia, Virgin, Martyred at Caligari, Sardinia |
| Felician of Rome, Martyr |
| Felicianus, Bishop of Foligno |
| Felicissima of Todi, Martyr |
| Felicissima of Valeria, Virgin and Martyr |
| Felicissimus, Martyr |
| Felicitas of Carthage |
| Felicitas, of Rome, Martyr and her seven martyred sons: |
| Silanus |
| Januarius |
| Alexander |
| Vitalis |
| Martial |
| Felix |
| Philip |
| Felix I, Pope and Martyr |
| Felix III, Pope and Grandfather of Pope Gregory the Great |
| Felix Mary da Merola, Capuchin Priest |
| Felix of Cantalice Capuchin Friar |
| Felix of Dunwich, First Bishop of East Anglia |
| Felix of Girona, Deacon and Martyr |
| Felix of Valois, Co-founder of the Theatines |
| Felix, Bishop and Martyr |
| Felix, Bishop of Nola |
| Felix, Martyr |
| Felix, Martyr |
| Ferbata of Seleucia, Widow, Sister of Simeon, Martyred by Sapur II of Persia |
| Ferdinand III, King of Castile |
| Ferdinand, Prince of Portugal |
| Ferinus, Martyr (I can find nothing about this saint) |
| Fermin, Bishop of Metz |
| Ferreol of Arles, Soldier and Martyr |
| Ferreol, Bishop of Limoges |
| Ferrutius (Ferruccio) of Mainz, Roman Soldier and Martyr |
| Fevronia (Febronia) Princess of Murom (Euphrosyne, her name in religion) |
| Fiacre, Hermit |
| Fidelis of Como, Soldier and Martyr |
| Fidelis of Sigmaringen, Capuchin Priest and Martyr |
| Fidelis, Bishop of Merida |
| Fidelis, Martyr |
| Fidentius, Martyr |
| Fidolus |
| Filarete (the Gardener) of Calabria, Basilian Abbot, successor to St. Elias of Enna |
| Filippo Ciardelli, Franciscan |
| Filippo Smaldone, Apostle of Our Lady of Pompeii, father of deaf, blind, and abandoned |
| Filon, Martyred in Nicomedia |
| Fingar (Guaire), Irish Missionary, Martyred in Cornwall |
| Finian of Clonard, Abbot |
| Finian of Moville, Abbot |
| Fintan, Abbot of Clonenagh |
| Firmatus, Martyr |
| Firmin, First Bishop of Amiens, Martyr |
| Firmus of Verona, Martyr |
| Flaminia, Virgin, Martyred in Nicomedia |
| Flannan, Bishop of Kilaloe, Ireland |
| Flavia, Martyr |
| Flavian, Martyr |
| Flavian, Patriarch of Constantinople |
| Flavius Clemens, Roman Senator, Uncle of Flavia Domitilla |
| Flora of Cordoba, Virgin and Martyr |
| Flora of Rome, Virgin and Martyr |
| Florentia, Martyr |
| Florentina of Cartagena, nun, Sister of Sts. Isidore, Leander, and Fulgentius |
| Florentius, Benedictine Confessor |
| Florentius, Bishop of Strassbourg |
| Florian, Soldier and Martyr |
| Floribert, son and successor to St. Hubert as Bishop of Liẻge |
| Florus of Arvernia in Aquitaine, Monk |
| Florus of Illyria, Stonemason, Martyr |
| Foillan (Folesinus), Irish Monk, Missionary, Martyr |
| Formundus, Bishop of Coutances |
| Fortunatus |
| Fortunatus, African Martyr |
| Fortunatus, Bishop of Naples |
| Fortunatus, Martyr |
| Forty Martyrs of Sebaste, Soldiers (one of them) |
| Foulques, Abbot of Fontenelle |
| Four Holy Crowned Ones, Martyrs, masons from Sirmium |
| Castor |
| Claudius |
| Nicostratus |
| Symphorus |
| Frances of Rome, Foundress of the Oblates of Mary (of Tor de’Specchi) |
| Frances Siedliska, Foundress of the Sisters of the Holy Family of Nazareth |
| Frances Xavier Cabrini, Foundress of the Missionary Sisters of the Sacred Heart, Died in Chicago’s Columbus Hospital on December 22, 1917, America’s First Saint |
| Francesco Pianzola, Priest, Founder of the Missionary Sisters of the Immaculate, Queen of Peace |
| Francis Aranha, Jesuit Lay Brother. Martyred in India |
| Francis Borgia, Jesuit Priest |
| Francis Caracciolo, Priest |
| Francis de Paula, Confessor, Founder of the Order of the Minims |
| Francis de Posadas, Dominican |
| Francis De Sales, Bishop of Geneva and Doctor of the Church |
| Francis Jerome (De Geronimo), Jesuit Priest |
| Francis Mary Croese of Camporosso, Capuchin Lay Brother |
| Francis Mary Paul Libermann, Second Founder of the Holy Spirit Order |
| Francis of Assisi, Deacon and Founder of the Franciscans |
| Francis Solano, Franciscan Missionary Priest |
| Francis Venimbene of Fabriano, Franciscan Priest, Disciple of St. Bonaventure |
| Francis Xavier Bianchi, Barnabite Priest, “Apostle to Naples” |
| Francis Xavier Can Nguyen, Vietnamese Catechist and Martyr |
| Francis Xavier Mau, Dominican Martyr of Viet Nam |
| Francis Xavier Seelos, Redemptorist Missionary to New Orleans |
| Francis Xavier, Jesuit Missionary Priest |
| Francisco Diaz de Ecija, Dominican Martyr of China |
| Francisco Marto, Visionary of Fatima |
| Franco (Frank) Lippi, Carmelite Priest Mystic |
| Franco of Assergi, Benedictine Monk |
| Francois de Laval, Bishop of Quebec |
| Francoise Meziere de Mezanges, Laywoman, One of the 19 Martyrs of Laval, guillotined |
| Fraternus, Bishop of Auxerre |
| Fredegand, Irish Abbot of Deurne |
| Frederic Janssoone, Franciscan Priest |
| Frederic Ozanam, Founder of the St. Vincent de Paul Society |
| Frederick Feikone, Norbertine Abbot |
| Frederick, Bishop of Liege, Martyr |
| Frederick, Bishop of Utrecht, Martyr |
| Fredlemid (Phelim), Bishop of Kilmore |
| Fridolin, Irish Apostle to the Upper Rhein |
| Frigidian (Frediano), Irish Missionary, Bishop of Lucca |
| Fromundus, Bishop of Coutances |
| Fronto, Bishop of Perigeux |
| Fructuosus, Bishop of Braga |
| Fructuosus, Bishop of Terragona |
| Frumentius, Bishop of Ethiopia |
| Frutos (Fructus) of Segovia, Castilian Hermit, Martyr |
| Fugatius (Fagan), Roman Missionary to Britain |
| Fulbert, Bishop of Chartres |
| Fulcran, Bishop of Lodeve |
| Fulgentius, Bishop of Ruspe in Africa |
| Fulton John Sheen (Peter John Sheen), Archbishop of Rochester, New York |
| Fursey of Peronne, Irish Missionary to England and France |
| Fuscien (Fuscianus), Missionary Martyred near Amiens |
