- Alchemy--Manuscripts1
- Alcoholism--Religious aspects--Islam1
- Aldobrandini, Giovanni degli1
- Alessandri, Alessandro degli1
- Alessandri, Bartolomeo degli2
- Alessandri, Niccolò degli1
- Alessandri, Piero degli9
- Alessandri, Pietro degli2
- Alessandro, Pietro di1
- Alexander, the Great, 356 B.C.-323 B.C.4
- Alfayn1
- Alfonso V, King of Aragon, 1396-14581
- Alfonso X, King of Castile and Leon, 1221-12841
- Alfīyah (Ibn Mālik, Muḥammad ibn ʻAbd Allāh)20
- Alfīyat al-ʻIrāqī (ʻIrāqī, ʻAbd al-Raḥīm ibn al-Ḥusayn)5
- Algebra6
- Alids4
- Allegories5
- Alliance israélite universelle2
- Alliata family1