- Astronomy, Greek1
- Astronomy--Religious aspects--Jainism1
- Atonement1
- Audiore, Antonio1
- Aurispa, Giovanni, approximately 1376-14591
- Austria--Lambach (Upper Austria)1
- Authors, Indic1
- Averroës, 1126-1198. Talkhīs kitāb al-ʻIbārah1
- Averroës, 1126-1198. Talkhīṣ kitāb al-maqūlāt1
- Averroës, 1126-1198. Talkhīṣ madkhal Furfūriyūs1
- Avodah (Yom Kippur liturgy)1
- Avraham ben Sahlan, -10301
- Aśvamedha1
- Aśvins (Hindu deities)1
- Bagalāmukhī (Hindu deity)1
- Bahrām V, King of Iran, -4381
- Bakers1
- Balances (Weighing instruments)1
- Bangladesh1
- Banks and banking1