- Abbazia di S. Maria di Porcilia (Padua, Italy)1
- Abbazia di Santa Giustina (Padua, Italy)1
- Abbazia di Santo Stefano (Pistoia, Italy)1
- Abbots1
- Abbots--Appointment, call, and election1
- Absolution1
- Acciaioli, Antonio1
- Acciaioli, Francesco1
- Accursius, glossator, approximately 1182-approximately 12601
- Achilles (Mythological character)1
- Administration1
- Advent--Liturgy1
- Aeneis (Virgil)1
- Aesop's fables1
- Affinity (Law)1
- Agnes, Saint, Martyr1
- Alban, Saint, -304?1
- Albertus de Fontanella1
- Albums1
- Albums (Books)1