- Abbaye aux Dames (Caen, France)1
- Abbaye de Corbie1
- Abbaye de Montier-en-Der (Montier-en-Der, France)1
- 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
- Abridgments1
- Absolution1
- Academic theses1
- Accademia degli Humoristi (Rome, Italy)1
- Acciaioli, Antonio1
- Acciaioli, Francesco1
- Accursius, glossator, approximately 1182-approximately 12601
- Achilles (Mythological character)1
- Acquittals1
- Acrostics (Poetry)1
- Adarve, Lazardo del1
- Administration1