- Aristotle10
- Aristotle, pseud1
- Artelouche de Alagona1
- Assheton, Ralph, Sir, 1603-16801
- Aston, Herbert1
- Augustine, of Hippo, Saint, 354-4308
- Avalos, Costanza d', Marquesa del Vasto1
- Bacon, Nathaniel, 1547-16221
- Badrī, Ḥasan ibn ʻAlī, d. 18001
- Baers, Johannes, d. 16531
- Bagot, William Bagot, Baron, 1773-18561
- Baibars al-Manṣūrī, ca. 1245-13251
- Balzani, Guglielmo1
- Bartholomew, of San Concordio, 1262-13471
- Basil Saint, Bishop of Caesarea, approximately 329-3791
- Baudouin d'Avesnes1
- Bawtree, G. F.1
- Bayles, Thomas1
- Beccadelli, Antonio, 1394-14711
- Bede, the Venerable, Saint, 635-7351