Author
- Aquila Romanus 1
- Aratus Solensis 2
- Archilochus 2
- Archimedes 2
- Aretaeus of Cappadocia 2
- Arethas, Archbishop of Caesarea (Cappadocia), ca. 860-ca. 940 1
- Argumenta Aeneidis et Tetrasticha in cunctis libris Vergilii 4
- Aristarchus, of Samos 1
- Ariston, of Chios 1
- Aristotle. 384-322 9
- Arrian 7
- Athanasius Saint, Patriarch of Alexandria d. 373 2
- Augustine Saint, Bishop of Hippo 67
- Augustus Emperor of Rome 63 B.C.-14 A.D. 5
- Ausonius, Decimus Magnus. 1
- Autolycus 1
- Bede the Venerable, Saint 673-735 1
- Berosus, the Chaldean 1
- Bion of Phlossa near Smyrna 1
- Boethius d. 524 11
