- Sharḥ al-Samarqandīyah fī al-balāghah (Mullawī, Aḥmad ibn ʻAbd al-Fattāḥ)1
- Sharḥ al-ʻAqāʼid al-ʻAḍudīyah (Dawwānī, Muḥammad ibn Asʻad)1
- Sharḥ Īsāghūjī (Kātī, Ḥusām al-Dīn al-Ḥasan)1
- Shelf marks1
- Shādhilī, Abū al-Ḥasan ʻAlī ibn ʻAbd Allāh, approximately 1196-12581
- Shādhilī, Abū al-Ḥasan ʻAlī ibn ʻAbd Allāh, approximately 1196-1258. Ḥizb al-barr1
- Shīʻah1
- Sibṭ al-Māridīnī, Badr al-Dīn Muḥammad ibn Muḥammad, 1423- Risālah fī bayān al-ʻamal bi-al-ālah allatī tusammá bi-al-Rubʻ al-mujayyab1
- Solar system1
- Spain1
- Spices1
- Spinning1
- Spiritual life--Christianity1
- Subkī, Taqī al-Dīn ʻAlī ibn ʻAbd al-Kāfī, 1284-1355. Tāʼīiyah1
- Sudan--Kordofan (Province)1
- Sufism--Doctrines1
- Sujāʻī, Aḥmad ibn Aḥmad, -1783? Jawāhir al-muntaẓimāt fi ʻUqūd al-maqūlāt1
- Sujāʻī, Aḥmad ibn Aḥmad, -1783? ʻUqūd al-Maqūlāt1
- Sullam (Akhḍarī, ʻAbd al-Raḥmān ibn Muḥammad)1
- Sun1