- ✠ St. Pachomius, Abbot
- ✠ St. Palladius, First Bishop and Apostle of the Scots
- ✠ Saint Pamphilus, Martyr
- ✠ St. Pantaleon, Physician and Martyr
- ✠ Saint Pantænus, Doctor of the Church and Apostle to the Indies
- ✠ Saint Paphnutius, Bishop in Egypt
- ✠ St. Paschal Baylon, Franciscan Lay Brother
- ✠ St. Paternus, Bishop of Avranches
- ✠ Saint Patrick, Bishop, Apostle of Ireland
- ✠ Conversion of St. Paul, Apostle to the Gentiles
- ✠ St. Paul Hermit, the First Hermit
- ✠ St. Paul of the Cross, Founder of the Passionists
- ✠ St. Paulinus of Nola, Bishop, Confessor
- ✠ St. Perpetuus, Bishop of Tours
- ✠ Basilicas of Sts. Peter and Paul
- ✠ Sts. Peter and Paul, Apostles
- ✠ St. Peter Canisius, Doctor of the Church
- ✠ St. Peter Celestine, Pope
- ✠ St. Peter Chanel, Missionary and Martyr
- ✠ St. Peter Claver, Jesuit Missionary
- ✠ St. Peter Damian, Cardinal Bishop
- ✠ Bl. Peter Favre of Villaret, First Jesuit Priest
- ✠ St. Peter Fourier, Parish Priest of Mattaincourt, Reformer of the Canons of Saint Augustine, Founder of the Canonesses of Notre Dame
- ✠ St. Peter Gonzales, Dominican Priest
- ✠ St. Peter Nolasco, Founder
- ✠ St. Peter of Alcantara, Franciscan Priest, Reformer
- ✠ St. Peter of Alexandria, Patriarch and Martyr
- ✠ Bl. Peter of Luxemburg, Bishop and Cardinal
- ✠ St. Peter of Verona, Dominican Priest and Martyr
- ✠ St. Peter-Julian Eymard, Priest, Founder of the Congregation of the Blessed Sacrament
- ✠ Sts. Peter, Andrew, Paul and Dionysia, Martyrs
- ✠ St. Peter's Chains
- ✠ St. Peter’s Chair at Antioch
- ✠ St. Peter’s Chair at Rome
- ✠ Saint Petronilla, Virgin
- ✠ Sts. Philip and James, Apostles and Martyrs
- ✠ St. Philip Benizi, Servite Priest
- ✠ St. Philip Neri, Founder of the Society of the Oratory, Patron of Works of Youth, Apostle of Rome
- ✠ St. Philip of Jesus, Martyred at Nagasaki, Patron of the City of Mexico
- ✠ St. Philogonius, Bishop of Antioch
- ✠ St. Philomena, Virgin and Martyr
- ✠ Saint Pius I, Pope and Martyr
- ✠ St. Pius V, Pope
- ✠ Saint Pius X, Pope
- ✠ Saint Placid, Martyr
- ✠ Saint Polycarp, Bishop, Martyr
- ✠ Saint Porphyry, Bishop of Gaza
- ✠ St. Pothinus, Sanctus, Attalus, Blandina and Forty-Eight other Martyrs of Lyons
- ✠ Saint Praxedes, Virgin
- ✠ Presentation of the B.V. Mary
- ✠ Sts. Primus and Felicianus, Martyrs
- ✠ St. Prosper of Aquitaine, Doctor of the Church
