- Alfonso VI, King of Castile and Leon, 1030-11091
- Alfonso VII, The Emperor, King of Castile, 1104-11571
- Alfonso VIII, King of Castile, 1155-12141
- Alfonso X, King of Castile and Leon, 1221-12844
- Alfīyah (Ibn Mālik, Muḥammad ibn ʻAbd Allāh)47
- Alfīyat al-ʻIrāqī (ʻIrāqī, ʻAbd al-Raḥīm ibn al-Ḥusayn)2
- Algebra12
- Alids3
- Alimony (Islamic law)1
- Aljamía1
- Allegories8
- Allegory3
- Alliata family1
- Almagest (Ptolemy)1
- Almanacs1
- Almanacs, German1
- Almucantar4
- Alphabet1
- Alphabet books2
- Alphabet--Religious aspects2