- Albizzi, Costanza1
- Aleramo, Marquis of Monferrato, -9671
- Alfonso V, King of Aragon, 1396-14581
- Antiphons (Music)1
- Apostles in art1
- Aqueducts1
- Aristotle1
- Arnaldus, de Villanova, -13111
- Arrighi family1
- Arrigucci family1
- Arrigucci, Caterina1
- Arrigucci, Luigi1
- Arte della lana (Guild : Florence, Italy)1
- Ashkenazi, Ẓevi Hirsch ben Jacob, -17181
- Bardi, Giovanni de', conte di Vernio, 1534-16121
- Bartolomeo, da Petroio, 1488?-15541
- Belgium--Andenne1
- Berit milah1
- Bona, Queen, consort of Sigismund I, King of Poland, 1494-15571
- Botany1