- Abbot, Robert, 1588?-1662?1
- Abbott & Chapman1
- Abdülhamid II, Sultan of the Turks, 1842-19181
- Abeille, Ludwig, 1761-18381
- Abel, Karl Friedrich, 1723-17871
- Abelard, Peter, 1079-11421
- Abenzara, Judah.1
- Abeyta, Domingo3
- Abney, Mary, Lady, d. 17501
- Abraham Eleazar1
- Abraham Lundquist & Cie1
- Abraham ben Dov, of Mezhirech, ca. 1741-17661
- Abreu de Galindo, Juan de.1
- Abū Shujāʻ al-Iṣfahānī, Aḥmad ibn al-Ḥusayn, approximately 1042-1
- Abū al-Mawāhib, ʻAbd al-Bāqī, d. 16601
- Abū al-Qāsim Khalaf ibn ʻAbbās al-Zahrāwī, -1013?3
- Abū ʻUbayd al-Qāsim ibn Sallām, approximately 773-approximately 837.1
- Accademia degli immobili1
- Accolti, Francesco, 1416 or 17-14881
- Accum, Friedrich Christian, 1769-18381