Authors
- Kareem Abdul-Jabbar
- Robert Abele
- Joe Abercrombie
- Dan Abnett
- Daniel Abraham
- Simon Abrams
- JJ Abrams
- Chris Achilleos
- Alex Acks
- John Joseph Adams
- Guy Adams
- Linda D. Addison
- Keith R A DeCandido
- Dahlia Adler
- Ann Aguirre
- A. A. Aguirre
- Ania Ahlborn
- Samira Ahmed
- Nick Aires
- Sofia Ajram
- Tim Akers
- Ian Akin
- Courtney Alameda
- Melissa Albert
- Richard Aleas
- Alisa Alering
- Steffan B. Aletti
- Karl Alexander
- Rebecca Alexander
- K. C. Alexander
- Brandon Alinger
- Nina Allan
- Max Allan Collins
- Chris Allcock
- Jordan Alsaqa
- Andrea Alvin
- John Alvin
- Christian Alzmann
- Alvaro Zinos Amaro
- Gemma Amor
- Amplitude
- Charlie Jane Anders
- Lou Anders
- Jeff Anderson
- Kevin J. Anderson
- Kelly Andrew
- McCalla Ann
- Mauricio Anton
- Viktor Antonov
- Peter Aperlo
- Sergio Aragones
- Arancia Studios
- Nathan Archer
- John Arcudi
- Charles Ardai
- Katherine Arden
- Simon Arizpe
- Megan Arkenberg
- Kelley Armstrong
- Vic Armstrong
- Eleanor Arnason
- William Arrow
- Various Artists
- Boris Artzybasheff
- Catherine Asaro
- Neal Asher
- James Asmus
- Randal Atamaniuk
- Derek Tyler Attico
- Russell Atwood
- Jane Austen
- Rob Auten
- Michael Avallone
- Alan Averill
- Mike Avila
- Michael Avon Oeming
- George Axelrod