- AANDAHL, Vance
- AARON, Shale
- AARONOVITCH, Ben
- aB HUGH, Dafydd
- ABBEY, Lynn
- ABDULLAH, Chelsea
- ABE, Kóbó
- ABERCROMBIE, Joe
- ABERNATHY, Robert
- ABNETT, Dan
- ABRAHAM, Daniel
- ACKERMAN, Forrest J.
- ACKERT, David
- ADAMS, Douglas
- ADAMS, Duncan
- ADAMS, Richard
- AFIFI, Nadia
- AGUIRRE, Ann
- AHMED, Saladin
- AICKMAN, Robert
- AIKEN, Joan
- ALDANI, Lino
- ALDISS, Brian W.
- ALDRIDGE, Ray
- ALEXANDER, Cassie
- ALEXANDER, K. C.
- ALEXANDER, Lloyd
- ALLAN, Nina
- ALLEN, Roger MacBride
- ALLIBIS, E. J.
- ALLSTON, Aaron
- ALTOMARE, Donato
- ALTOV, Genrich
- AMATUNI, Petronij G.
- AMIS, Kingsley
- AMIS, Martin
- AMNUEL, Pavel
- ANDERS, Charlie Jane
- ANDERSON, Jeff
- ANDERSON, Kevin J.
- ANDERSON, Paul Dale
- ANDERSON, Poul
- ANDERSON, Sue
- ANDERSSON, C. Dean
- ANDREVON, Jean-Pierre
- ANDREWS, Ilona
- ANFILOV, Gleb
- ANSPACH, Peter
- ANSTEY, F.
- ANTHONY, John
- ANTHONY, Piers
- ANTIEAU, Kim
- ANVIL, Christopher
- ARDAI, Charles
- ARDEN, Tom
- ARCHER, Nathan
- ARMENTROUT, Jennifer L.
- ARMSTRONG, Anthony
- ARNASON, Eleanor
- ARTHUR, Keri
- ASARO, Catherine
- ASENOV, Dragomir
- ASHER, Neal L.
- ASHTON, Edward
- ASIMOV, Isaac
- ASPRIN, Robert
- ATAMANOV, Michael
- ATTANASIO, A. A.