- Arrigucci, Caterina1
- Arrigucci, Donato1
- Arrigucci, Luigi1
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- Artedo, Petrus de1
- Asceticism--Early church1
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- Asher Yeshaʻy., a.b.d. ḳ. Ropshits1
- Ashkenazi, Ẓevi Hirsch ben Jacob, -17181
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- Attila, -4531
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- Aurispa, Giovanni, approximately 1376-14591
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- Averroës, 1126-1198. Talkhīs kitāb al-ʻIbārah1
- Averroës, 1126-1198. Talkhīṣ kitāb al-maqūlāt1