- Abbassi M.R.
- Abdrakhmatov K.
- Abou Karaki Najib
- Aboulahris Hassan
- Abrahami Rachel
- Abrahami R.
- Abtout A.
- Ackerer J.
- Ackerer Julien
- Ackerer Philippe
- Adamson Kathryn
- Adamson K.
- Agharroud Kamal
- Aguirre Enoch
- Agusta Vera Christanti
- Aherwar Kishan
- Ahmadian Seiran
- Akçar Naki
- Akhilesh K.
- Alan J. Hidy
- Alasset Pierre-Jean
- Alcalá-Reygosa Jesús
- Alçiçek Hülya
- Alçiçek Mehmet Cihat
- Aléon-Toppani Alice
- Alessandro Morbidelli
- Alexanderson Helena
- Allard James
- Allemand Pascal
- Alvarado Miguel
- Ammon K.
- Amorosi Alessandro
- Amos Colin
- Ancrenaz Arthur
- Ancrenaz Arthur
- Anderson Robert
- Andò Sergio
- André Daniel
- Andre G.
- Andrés Nahuel
- Andrés Nuria
- Andreucci C.
- Andrieu Valerie
- Angelier J.
- Angel Isandra
- Ansberque Claire
- Antoine Pierre
- Antoniades D.
- Antón Loreto
- Aoudjehane Mohammed
- Aquilina Luc
- Arce José Luis
- Arce Jose Luis
- Aribowo Sonny
- Aribowo Sonny
- Ari Matmon
- Arnáez José
- Arnaud Judicaël
- Arnaud N.
- Arnaud Nicolas Olivier
- Arnauld N
- Arnold Maurice
- Arzhanikova Anastasia
- Arzhanikov Sergueï
- Arzhannikova A.
- Arzhannikova Anastasia
- Arzhannikova Anastasia V.
- Arzhannikova A.V.
- Arzhannikov A.
- Arzhannikova Nastya
- Arzhannikov Sergei G.
- Arzhannikov Sergey
- Arzhannikov S.
- Arzhannikov S.G.
- A. Salgado
- Astudillo L.
- Athanassas C.D.
- Athanassas Constantin D
- Audemard Franck
- Audemard M. Franck
- Audin Laurence
- Audin Laurence
- Audin L.
- Aumaître Georges
- Aumaitre Georges
- Authemayou Christine
- Avouac Jean‐philippe
- Ayache M.
- Ayalew D
- Ayelew D