- Arcibucci, Alessandro1
- Ardabīlī, Muḥammad ibn ʻAbd al-Ghanī, 1572-1627. Sharḥ al-Unmūdhaj1
- Argonauts (Greek mythology)1
- Aristotle1
- Arithmetic1
- Armada (1588)4
- Armayūnī, Yūsuf ibn ʻAbd Allāh, -15511
- Armenia1
- Armorial bindings4
- Armorial bookplates1
- Armorial stamps1
- Arrigucci family3
- Arrigucci, Andrea1
- Arrigucci, Caterina1
- Arrigucci, Donato1
- Arrigucci, Luigi1
- Art1
- Arte della lana (Guild : Florence, Italy)12
- Assassination2
- Astarābādī, al-Ḥasan ibn Muḥammad, d. 1315. Wāfīyah fī sharḥ al-Kāfīyah2