Author
- Alfnāry1
- Alfonso de Palencia1
- Ali Efendi Chataghali1
- Ali Ibrahim Khan1
- Ali al-Bistami1
- Ali bin al Mugrab Al Uyuni1
- Ali ibn Maymun1
- Ali ibn Sahl Rabban al-Tabari1
- Alonso Carrillo y Laso1
- Alonso de Molina1
- Alonzo de Santa Cruz1
- Amaracandrasūri1
- Amaru1
- Amīr Kātib ibn Amīr ʻUmar Itqānī1
- Ananta Bhaṭṭa1
- Anantabhaṭṭa1
- Anantakavi1
- Anbābī, Yūsuf ibn Badr al-Dīn1
- Andreas Vesalius1
- Andreas de Escobar1