Name
- Arbuthnot, Mary, née Urquhart, wife of Robert Arbuthnot of Haddo, c 1743-18181
- Arbuthnot, Robert, of Haddo, 1728-18031
- Aristeidis, Ioannis, fl 1815-18301
- Arixeias, K, student of French, fl 1815-18301
- Ashburnham, Charlotte Susan, daughter of George, 3rd Earl of Ashburnham, 1801-18651
- Asopio, Kostantino, fl 1815-18301
- Association for the Promotion of the Discovery of the Interior of Africa, 17881
- Astariti, Tommaso, of Meta, Italy, fl 1815-18301
- Astell, William, director of the East India Company, 1774-18471
- Astolfi, Astolfo, Captain, fl 1815-18301
- Athanasiadis, Konstantinos, teacher, of Preveza, Greece, fl 1815-18301
- Athanasios, Nikolaos Dimitrios, correspondent of Frederick North, 5th Earl of Guilford, fl 1815-18301
- Athenaios, N, fl 1800-18301
- Athinaios, Andreas Neris, of Nafplion, Greece, fl 1815-18301
- Atkinson, George, civil engineer, fl 1795-18051
- Atkinson, Joseph, at Ceylon, fl 1790-18101
- Attree, H R, of Brighton, Sussex, fl 1800-18301
- Aux, Henri Raymond, Marquis de Lally-Tolendal et d'Aux, Patron de Lescaut, 1782-18701
- Avramiotis, Maria, of Corfu, fl 1815-18301
- Avramiotti, G Dionisio, of Zante, Cefalonia, fl 1815-18301