

| Painters | Luke, Bl (Fra) Angelico |
| Pakistan | Thomas, Apostle |
| Palermo, Italy | Agatha, Benedict the Black |
| Palestine | Mary, 'Queen of Palestine' |
| Palestinian Christians | George |
| Pallbearers | Joseph of Arimathea |
| Panama | Immaculate Conception, Immaculate Heart of Mary |
| Papua New Guinea | Michael the Archangel |
| Paraguay | Our Lady of the Assumption, Our Lady of Lujan |
| Paratroopers | Michael the Archangel |
| Parenthood | Rita of Cascia |
| Paris, France | Genevieve (Genofeva), Denis, Bishop of Paris |
| Parish Missions | Leonard of Port Maurice |
| Park-keepers | John Gualbert |
| Patras, Greece | Andrew, Apostle |
| Patricia, Italy | Roch |
| Pavia, Italy | Siro, Syrus of Pavia, Theodore of Pavia |
| Pawnbrokers | Nicholas of Myra, Bernardino of Feltre (Bd) |
| Pelota players, Argentinian | Francis Xavier |
| Pennsylvania, USA | Our Lady of the Miraculous Medal |
| Pensioners, old age | Our Lady of Consolation, Teresa of Jesus Jornet e Ibars |
| Penzance, Cornwall, England | John the Baptist |
| Perfumers, perfumiers | Nicholas of Myra |
| Pergamino, Argentina | Virgin of La Merced |
| Peronne, France | Fursey of Peronne |
| Persecuted Christians | John De Martha |
| Persia; Iran | Maruthas |
| Peru | Joseph, Rose of Lima |
| Pestilence (relief) | Roch |
| Petit Goave, Haiti | Our Lady of Lourdes |
| Pets | Antony the Abbot |
| Pharmacists/Druggists | Cosmas and Damian, Raphael the Archangel |
| Philatelists | Gabriel the Archangel |
| Philippines | Our Lady of Safe Travel, Our Lady of the Turumba, Rose of Lima, Immaculate Heart of Mary |
| Philosophers | Immaculate Conception of Mary, Pudentiana, Rose of Lima |
| Physically Disabled | Giles |
| Physicians | Cosmas and Damian, Luke, Pantaleon |
| Physicians (diseases, contagious) | Roch, Sebastian |
| Piedmont | Maurice |
| Piedmont region | Maurice |
| Pilgrims | Nicholas of Myra, Christopher |
| Pilgrims (sick) | Pius X |
| Pilots | Our Lady of Loreto |
| Pilots, maritime | Francis of Paola, Nicholas of Myra |
| Pisa, Italy | Ranieri |
| Plague | Gregory the Great, Roch, Sebastian |
| Plasterers | Bartholomew |
| Poets | David, Columba |
| Poison Sufferers | Benedict, Abbot, John the Apostle, Pirminus |
| Poland | Casimir, Florian, Mary, 'Queen of Poland', Stanislaus, dalbert, Stanislaus Kostka |
| Police officers | Michael the Archangel |
| Police, Italian | Mary, Faithful Virgin |
| Police, Spanish | Our Lady of the Pillar |
| Police, Spanish, armed | The Guardian Angels |
| Police, local, municipal | Sebastian |
| Ponza, Italy | Silverio |
| Poor | Anthony of Padua, Lawrence, Ferdinand III of Castile |
| Popes | Gertrude the Great, Peter the Apostle |
| Portsmouth, England | Nicholas of Myra |
| Portugal | Anthony of Padua, Francis Borgia, Gabriel the Archangel, George, Immaculate Conception of Mary |
| Possession (by the Devil) | Cyriacus, Dymphna, Michael the Archangel, Andrew Avellino |
| Postal services | Gabriel the Archangel |
| Postal workers | Gabriel the Archangel |
| Potenza, Italy | Gerard of Potenza |
| Potholers (spelunkers) | Benedict, Abbot |
| Poznan Poland | Paul, Apostle, Peter the Apostle |
| Preachers | Catherine of Alexandria, John Chrysostom |
| Pregnant women | Gerard Majella, Margaret (or Marina) of Antioch, Raymond Nonnatus |
| Priests | John Vianney |
| Priests (Spanish, secular) | John of Avila |
| Printers | Augustine, Genesius, John of God |
| Prison guards, officers | Hippolytus, Processus and Martinian, Adrian of Nicomedia |
| Prison officers (Italian) | Basilides |
| Prisoners | Dismas, Leonard of Noblac, Roch, Vincent de Paul, Ferdinand III of Castile |
| Prisoners (Italian) | Joseph Cafasso |
| Probus, Cornwall, England | Grace, Probus |
| Propagation of the Faith | Francis Xavier |
| Protector of Crops | Ansovinus |
| Prussia | Dorothy of Montau |
| Public Health Service | Martin de Porres |
| Public Relations | Bernardine of Siena |
| Public education | Martin de Porres |
| Puebla, Mexico | Michael the Archangel |
| Pueri Cantores | Dominic Savio |
| Pueri Cantors | Dominic Savio |
| Puerto Rico | Our Lady of Divine Providence |
| Puerto Vallarta, Mexico | Our Lady of Guadalupe |
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