Authors
- Jeff Carlisle
- Tom Carlisle
- Matthew Michael Carnahan
- Carol K. Carr
- Sam Carrington
- Jennifer Carroll
- Mike Carroll
- Lin Carter
- Chris Lewis Carter
- Chip Carter
- Andrew Cartmel
- Nat Cassidy
- Michael Cassutt
- Jean-Christophe Castelli
- Richard Castle
- V. Castro
- Beth Cato
- James Causey
- Hugh B. Cave
- Marc Cerasini
- Lauren Certo
- Adam Cesare
- Mark Chadbourn
- Ian Chaddock
- Becky Chambers
- Christopher Chambers
- Keith Champagne
- Eliza Chan
- Clay McLeod Chapman
- Fred Chappell
- Jim Charlier
- Jerome Charyn
- Amy Chase
- Howard Chaykin
- Curtis C. Chen
- C.J. Cherryh
- Ludovic Chesnot
- Lionel Chetwynd
- R. Chetwynd-Hayes
- Preeti Chhibber
- Lee Child
- Amy Beth Christenson
- Autumn Christian
- Roger Christian
- Adam Christopher
- Kay Chronister
- Michael Chu
- Luke Chueh
- T.S. Church
- Michael Cisco
- Chris Claremont
- Jack Clark
- Petula Clark
- Simon Clark
- Corinne Leigh Clark
- Arthur C. Clarke
- Angela Clarke
- Ann Claycomb
- Dhonielle Clayton
- W.M. Cleese
- Ann Cleeves
- J.M. Clements
- Jonathan Clements
- Ernest Cline
- Lyndall Clipstone
- Ray Cluley
- David B. Coe
- Rebecca Coffindaffer
- Genevieve Cogman
- David S. Cohen
- Tomm Coker
- Alyssa Cole
- Dylan Cole
- Kamilah Cole
- Adrian Cole
- Simon Coleby
- Bennett R. Coles
- The Reverend Richard Coles
- Nancy Collins
- Joe Colquhoun
- Neville Colvin
- Titan Comics
- Iris Compiet
- Robbie Conal
- S. L. Coney
- John Connolly
- Michael Connolly
- Tina Connolly
- John Conway
- Brenda Cooper
- John Cooper
- Sean Copeland
- Basil Copper
- Eric Corbeyran
- Zoraida Córdova
- James S. A. Corey
- Ryan Cormier
- Paul Cornell
- Larry Correia
- S.A. Cosby
- Mark Cotta Vaz
- Colin Cotterill
- Ted Cowan
- Edward Cox
- Greg Cox
- Dan Coxon
- Elena Craig
- Luke Crane
- M. W. Craven
- Michael Crichton writing as John Lange
- A.C. Crispin
- Ben Croll
- Mason Cross
- Kevin Crossley
- Amy Croushorn
- Cameron Crowe
- Kieran Crowley
- Julius Csotonyi
- Dennis Culver
- Sean Cummings
- Fiona Cummins
- Dan Curry
- Nicole Cushing
- Nick Cutter
- Peter W Czernich
- G James Daichendt
- Rick Dakan
- Glenn Dakin
- Vince Danks
- Richard Dansky
- Steve Danuser
- Alexander Dan Vilhjálmsson
- Julie C. Dao
- Ellen Datlow
- Heather Davey
- Peter David
- Andy Davidson
- Paul Davies
- Milton J. Davis
- Milton Davis
- Delilah S Dawson
- Felicia Day
- Rufus Dayglo
- Claire Dean
- Kristin Dearborn
- Jeffery Deaver
- Max Décharné
- Rachel Autumn Deering
- Djilalli Defali
- Samuel R. Delany