Names
- Armstrong, John M.2
- Arnett, Harold E.2
- Arnold, Chester A.2
- Arpaci, Vedat S.2
- Arthos, John2
- Ash, Major M.2
- Ashley, Brett2
- Atkins, Daniel2
- Atkinson, John W.2
- Atreya, Arvind2
- Atreya, Sushil K.2
- Attwood, Stephen S.2
- Atzmon, Michael2
- Aupperle, Eric M.2
- Austin, Douglas2
- Austin, Henry R.2
- Autrey-Hunley, Carolyn2
- Awkward, Michael2
- Axelrod, Morris2
- Axelrod, Pearl G.2