- Piccolomini, Giacomo1
- Piccolomini, Pietro di Carlo1
- Piccolomini, Scipione1
- Pini, Giovanni1
- Pitti, Francesco1
- Pius III, Pope, approximately 1440-15031
- Pivari, Antonio1
- Pontificals1
- Port of London Authority1
- Prayer--Catholic Church1
- Prenuptial agreements1
- Presentation leaves1
- Privileges and immunities1
- Privileges and immunities, Ecclesiastical1
- Provenance labels1
- Psychology1
- Pupi, Benedetto1
- Purim--Liturgy1
- Puñonrostro, Juan Arias de Avila Portocarrero, conde de, active 16th century1
- Quotations1