- Affinity (Law)1
- Africa1
- Africa--Atlantic Coast1
- Agriculture1
- Albertus de Fontanella1
- Alchemy1
- Aldobrandini, Giovanni degli1
- Alessandri, Alessandro degli1
- Alessandri, Niccolò degli1
- Alessandro, Pietro di1
- Alfonso X, King of Castile and Leon, 1221-12841
- Alonso de Bracamente1
- Alphabets1
- Alvarez family1
- Amadori, Lorenzo1
- Ambrogio, Leonardo d'1
- Amedei, Bartolomeo1
- Amideo, Chele d'1
- An authorization to perform a ritual slaughter according to the Jewish law by Avraham Mosheh Leʼon of Carpentras to his son Daniʼel, written on 25 of Tamuz 17641
- Anaphora1