- Aaboe Signe
- Abadie Eric
- Abboud‐abi Saab Marie
- Abrahamsen E. P.
- Abrahamsen E. Povl
- Abram Nerilie J.
- Accadia Christophe
- Accensi Mickaël
- Ackley Stephen F.
- Ackley Steve
- Acosta Mario
- Acosta Mario
- Acquistapace Claudia
- Adams Timothy
- Adcroft Alistair J.
- Aemisegger Franziska
- Agier Lydiane
- Aguiar Eva
- Akhil Valiya Parambil
- Akhoudas Camille Hayatte
- Aksenov Yevgeny
- Al Azhar Muchamad
- Albright Anna Lea
- Albright Anna Lea
- Alderson Steven G.
- Alessandri Andrea
- Alexander Nicola
- Alexandrov Georgii A.
- Alford Matthew H.
- Alford Matthew H
- Alias A.
- Allaigre C.
- Allard Richard
- Allende Contador Sofia
- Alvain Séverine
- Alvera-Azcarate Aida
- Alves Lyndon
- Ament Felix
- Anav Alesandro
- Andrew Peterson K.
- Andrews Martin
- Anglaret Xavier
- Anquetin Sandrine
- Anquetin Sandrine
- An Soon-Il
- Ansorge Isabelle J.
- Anthoni Peter
- Antoine David
- Antoine David
- Aoki Shigeru
- Aouf Lotfi
- A. Rao Suryachandra
- Ardhuin Fabrice
- A. Research Team of Carib Coast
- Arixi Sophian
- Armour Kyle C
- Armstrong Robert A.
- Arnault Sabine
- Arneth Almut
- Arnold Alex
- Arribas Alberto
- Arrigo Kevin
- Arrigo Kevin R.
- Arrizabalaga Haritz
- Arrizabalaga Haritz
- Arsouze Thomas
- Asanuma Ichio
- Asmath Hamish
- Assmy Philipp
- Atmadipoera Agus
- Aucan Jérôme
- Auger Matthis
- Auger Pierre-Amaël
- Auger Pierre-Amaël
- Aumont Olivier
- Autret Emmanuelle
- Avalos Yanmichel Morfa
- Awo Mesmin
- Awo M
- Axell Lars
- Ayache Mohamed
- Ayata Sakina-Dorothée
- Ayina Ludos-Herve
- Ayres H.
- Aznar Roland