Author
- Alexander III1
- Alexander Strange1
- Alfonso de Cartagena1
- Ali ibn Mohammed al-Jurjani1
- Alonso Martin del Canto1
- Andrea Alciato1
- Angelus Callimachus de Monteviridi1
- Anquetil Raolée1
- Anselm of Canterbury1
- Anthonius Charrcon1
- Anton Francesco Doni1
- Antoninus of Florence1
- Antonio d'Azario1
- Antonio dalle Conchelle1
- Arnold Goerinus1
- Ascanio Savorgnano1
- Asmus Biersteden1
- Assembly of the French clergy1
- Athanasius of Alexandria1
- Averroes1