- Ambrose, Saint, Bishop of Milan, -3971
- Ambrosian rite (Catholic Church)1
- Amedei, Bartolomeo1
- Amelius, Martyr1
- Amicus, Martyr1
- Amideo, Chele d'1
- Amthilah al-mukhtalifah1
- Amānāt wa-al-iʻtiqādāt (Saʻadia ben Joseph)1
- Amīr Khusraw Dihlavī, approximately 1253-13251
- Amīr al-Kabīr, Muḥammad ibn Muḥammad, 1742-1817. Majmūʻ fī al-fiqh1
- An authorization to perform a ritual slaughter according to the Jewish law by Avraham Mosheh Leʼon of Carpentras to his son Daniʼel, written on 25 of Tamuz 17641
- Anas ibn Mālik, -approximately 7111
- Anatoli, Jacob ben Abba Mari ben Samson, active 13th century1
- Anaya, Diego de1
- Anaya, Pedro1
- Anbārī, Aḥmad. ḥikāyat al-ḥāl al-gharīb al-mubhijah li-nafs al-arīb1
- Ancestor worship1
- Andrea, Antonio di1
- Andrea, Fabiano di1
- Andrea, Michele di1