Author
- Adam of Eynsham1
- Adrian IV1
- Adrian VI1
- Ahmad ibn Hanbal1
- Ahmad ibn Muhammad ibn Muhammad Shumunni1
- Ahmedi1
- Akmal al-Din al-Babarti1
- Al-Hajjawi1
- Al-Khaṭīb ash-Shirbīniy1
- Al-Maqrizi1
- Al-Shahrastani1
- Al-Ḥusayn ibn al-Ḥasan Jurjānī1
- Ala ud-Daula Simnani1
- Albert de Löwenstein-Wertheim-Virnebourg1
- Albrecht von Bonstetten1
- Alejo Salgado Correa1
- Alessandro Piccolomini1
- Alexander Strange1
- Alfred John Dunkin1
- Ali Qushji1