- Advent Christian Church. Woman's Home and Foreign Mission Society235
- Aegidius Beneventanus1
- Aelfric, Abbot of Eynsham1
- Aelian, active 3rd century1
- Aerial Navigation Co.1
- Aesop1
- Aérolande1
- Afanasev, Leonid, b. 1864.4
- Afanasʹev, A. N. (Aleksandr Nikolaevich), 1826-18714
- Afanasʹev, Aleksandr Stepanovich, 1817-18759
- Africa Inland Mission15
- Africanus, Sextus Julius1
- Agar, John Samuel, approximately 1770-approximately 1835, printmaker9
- Agas, Ralph, 1545-16211
- Agate, Alfred T., 1812-1846, artist1
- Agate, Alfred Thomas1
- Agate, C.C.1
- Agence Sygma7
- Agenda (London, England)4
- Agenzia per l’autosoppressione del proletariato1
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