Author
- Abu Sa'd al-Mutawalli1
- Abu al-Layth al-Samarqandi1
- Abu al-Qasim al-Zahrawi1
- Abu-'L-Barakat ibn-Al-Anbari1
- Abū ʿAmr al-Dānī1
- Abū Ṭāhir al-Samarqandī1
- Accursius1
- Adam of Aldersbach1
- Adam of Bockenfield1
- Akhī Zādah1
- Al-Khatib al-Baghdadi1
- Al-Khazini1
- Al-Mawardi1
- Al-Nawawi1
- Al-Suhayli1
- Albertanus of Brescia1
- Albertus Magnus1
- Alfonso X of Castile and Leon1
- Ambrose1
- Anselm of Canterbury1