Author
- Antonius Beraldus1
- Antonius Gryphius1
- Anvari1
- Apostolic Camera1
- Archduke Ernest of Austria1
- Armenian Catholic Church1
- Arnaldus de Villa Nova1
- Arnold Goerinus1
- Arnold-André Sittard1
- Ascanio Sforza1
- Asiriddini Akhsikatī1
- Asmus Biersteden1
- Assar Tabrizi1
- Assembly of the French clergy1
- Augustine of Hippo1
- Avicenna1
- Azariah dei Rossi1
- Azriel1
- Aşık Paşa1
- Aḥmad Ibn-Fāris1