- Arabic language--Vocabulary1
- Arabs1
- Ardabīlī, Muḥammad ibn ʻAbd al-Ghanī, -1249 or 1250. Sharḥ al-Unmūdhaj1
- Armayūnī, Yūsuf ibn ʻAbd Allāh, -15511
- Armenia1
- Art and philosophy1
- Ascetics1
- Ashkenazi, Ẓevi Hirsch ben Jacob, -17181
- Ashkenazim1
- Astarābādhī, Muḥammad ibn ʻAlī, -1618 or 1619. Manhaj al-maqāl fī taḥqīq aḥwāl al-rijāl1
- Astronomical instruments1
- Astronomy, Medieval1
- Astronomy--Religious aspects1
- Astronomy--Religious aspects--Jainism1
- Athīr al-Dīn al-Abharī, al-Mufaḍḍal ibn ʻUmar, -1265. Hidāyat al-ḥikmah1
- Atoms1
- Atonement1
- Atonement (Prayer)1
- Atonement (Prayer)--Hinduism1
- Austria1