- Aadland, C.R.
- Acevedo, Araceli
- Acraman, J.S.
- Administration, Atmospheric
- African, South
- Afsc
- Agassiz, A.
- Agnew, R.G.
- Aguirre, David
- Aims, A.M.S.
- Alaminos, V.
- Alaska, V.
- Albatross, N.o.
- Albatross, R.V.
- Albatross, V.
- Albius, N.o.
- Aldebaran, N.o.
- Alexander, W.B.
- Alis, N.o.
- Alison Ballance, C. Duffy
- Allen, G.R.
- Allen, G.
- Allen, J.
- Allen
- Allen, Mark
- Allen, D.
- Allué, R.
- Allyn, Walter L.
- Almeida
- Aloui
- Alvarez-Sánchez, L.F.
- Amaro, N.o. laurent
- Ambrosio, L.
- Amemiya, Kentarou
- Amoedo, Matilde
- Anctil, Michel
- Anderson, Eric
- Anderson, M.
- Anderson, M.E.
- Anderson, M. Eric
- Anderson, Michael
- Anderson, V.T.
- Andrew, Timothy
- Andrews, L.
- André, Capart
- Angulo, Arturo
- Ankenbrandt, L.
- Anne, K. Dempsey M. V. Carrie
- Annette
- Antarktis, I.
- Antillas, V.
- Antoni
- Antrim
- Anyo-Maru, N.o.
- Anónimo
- Aoki, K.
- Arcila, D.
- Arena, Giuseppe
- Arena, G.
- Armesto, A.
- Armstrong, Paul
- Arronte, Juan C.
- Ashe, Paula K.
- Astarloa, Diaz
- Astarloa, Juan M. Diaz
- Astarloa, Diaz de
- Astarloa, J.M.Díaz
- Atl. Sud, Expl Océa
- Atlantis, R.V.
- Atlantis, V.
- Auckland, Of
- Austral, Camp
- Austral, N.o.
- Auty
- Awai, M.L.