- Aaron, Rachel
- Aaronovitch, Ben
- ab Hugh,Dafydd
- Abdel Aziz, Basma
- Abercrombie, Joe
- Abnett, Dan
- Abraham, Daniel
- Abret, Helga
- Ackermann, Andreas
- Ackermann, Anika
- Ackermann, Erich
- Acks, Alex
- Adair, Elya
- Adams, Alex
- Adams, Douglas
- Adams, Guy
- Adams, Richard
- Adrian, Chris
- Adrian, Julia
- Adrian, Lara
- Aguilar Solace, Rosalia
- Ahdieh, Renée
- Ahlborn, Ania
- Ahmed, Saladin
- Ahonen, Erkki
- Aiken, G. A.
- Aiken, L. Roy
- Akers, Tim
- Alameda, Courtney
- Alba, Tina
- Albrecht, Matthias
- Albrodt, Erik
- Aldani, Lino
- Alderman, Naomi
- Aldiss, Brian W.
- Aldrich, Zoey
- Alexander, Cassie
- Alexander, Lloyd
- Alexander, Martin
- Alexander, Rebecca
- Alpers, Hans Joachim
- Alt, Christian
- Alten, Steve
- am Bruhl, Leo
- Amery, Carl
- Amore, Elisa S.
- An- und reingesehen
- Andara, Erik R.
- Andel, Rebecca
- Anders, Eska
- Andersen, Hans Christian
- Anderson, Kevin David
- Anderson, Kevin J.
- Anderson, Poul
- Andrews, Ilona
- Andrews, LJ
- André, Martina
- Angerhuber, Eddie M.
- Anghelides, Peter
- Annandale, David
- Ansing, Marco
- Anson, Jay
- Anthony, Mark
- Anthony, Piers
- Anton, Uwe
- Antonsson, Linda
- Antony, S. F.
- Aoki, Ryka
- Appel, Sabine
- Archer, Sarah
- Ardelean, Flavius
- Arden, Katherine
- Arden, Tom
- Arend, Nicole
- Armentrout, Jennifer L.
- Armintrout, Jennifer
- Armstrong, Kelley
- Arnold, Luke
- Arold, Marliese
- Asaro, Catherine
- Aschwanden, Evelyne
- Ashby, Madeline
- Asher, Eric R.
- Asher, Neal
- Ashta, Lucia
- Ashton, Edward
- Ashwood, Sharon
- Asimov, Isaac
- Asimov, Janet
- Asprin, Robert
- Aster, Alex
- Atlas, Laili
- Atwater, Olivia
- Atwood, Margaret
- Aubert, Brigitte
- Audley, Anselm
- Augstburger, Urs
- Auringer, Julian
- Autumn, Emilie
- Aveyard, Victoria
- Awad, Mona
- Awe, Michael J.
- Awgustow, Josephina
- Aysa, John
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