Author
- Abraham bar Hiyya1
- Abu al-Abbas al-Sharishi1
- Abu al-Qasim al-Zahrawi1
- Abu al-Qasim al-Zayyani1
- Acyutakr̥ṣṇānandatīrtha1
- Adrian VI1
- Agnivesa1
- Agniveśamuni1
- Ahmad al-Badawi1
- Akiva ben Joseph1
- Al-Biruni1
- Al-Jaldaki1
- Alexander Bonini1
- Alfonso de Palencia1
- Alfred John Dunkin1
- Alisa of Bastogne, active 15th century1
- Alonzo de Santa Cruz1
- Alshaarīshy1
- Amaracandrasūri1
- Amir Khosrow1