- Accounts1
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- Adrian VI, Pope, 1459-15231
- Advisory opinions (Islamic law)1
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- Agazaria, Claudio Boncompagni di1
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- Agustín, Antonio, 1517-1586. Dialogos de medallas inscriciones y otras antiguedades1
- Ajurrūmīyah (Ibn Ājurrūm, Muḥammad ibn Muḥammad)4
- Alba, Fernando Alvarez de Toledo, duque de, 1507-15821
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- Alexander III, Pope, -11811
- Alfasi, Isaac ben Jacob, 1013-11031
- Alfonso I King of Asturias, 693-7561