Author
- Al-Zamakhshari1
- Albertus Magnus1
- Albrecht von Eyb1
- Alexander of Villedieu1
- Alfonso de Cartagena1
- Ali Qushji1
- Ali al-Bistami1
- Alṭaaāʼī1
- Andrea Amadio1
- Andreas de Escobar1
- Angelus Callimachus de Monteviridi1
- Anselm of Canterbury1
- Antonius de Carlenis1
- Antonius de Vecelli1
- Arles1
- Armenian Catholic Church1
- Augustinus Triumphus1
- Augustinus de Leonissa1
- Azriel1
- Aḥmad Ibn-Muḥammad Ibn-ar-Rifʿa1