Author
- Abu'l-Faraj ibn al-Jawzi1
- Abū al-Layth al-Samarqandī, Naṣr ibn Muḥammad, -983?1
- Abū ʿAmr al-Dānī1
- Adam Magister1
- Aelius Donatus1
- Ahmad ibn Hanbal1
- Al-Bayhaqi1
- Al-Quda'i1
- Al-Tamimi, the physician1
- Albertanus of Brescia1
- Albertus de Saxonia1
- Alcuin1
- Aldobrandino da Siena1
- Alexander Bonini1
- Alexander of Villedieu1
- Alfred of Sareshel1
- Amīr Kātib ibn Amīr ʻUmar Itqānī1
- Anselm of Canterbury1
- Antonio d'Azario1
- Arnaldus de Villa Nova1