Authors
- Howard Chaykin
- Curtis C. Chen
- C.J. Cherryh
- Ludovic Chesnot
- Lionel Chetwynd
- R. Chetwynd-Hayes
- Lee Child
- Amy Beth Christenson
- Roger Christian
- Autumn Christian
- Adam Christopher
- Kay Chronister
- Michael Chu
- Luke Chueh
- T.S. Church
- Michael Cisco
- Chris Claremont
- Petula Clark
- Simon Clark
- Jack Clark
- Arthur C. Clarke
- Ann Claycomb
- Dhonielle Clayton
- W.M. Cleese
- Ann Cleeves
- Jonathan Clements
- J.M. Clements
- Ernest Cline
- Lyndall Clipstone
- Ray Cluley
- David B. Coe
- Genevieve Cogman
- David S. Cohen
- Tomm Coker
- 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
- Michael Connolly
- John Connolly
- Tina Connolly
- John Conway
- John Cooper
- Brenda Cooper
- Sean Copeland
- Basil Copper
- Eric Corbeyran
- Zoraida Córdova
- James S. A. Corey
- Ryan Cormier
- Paul Cornell
- Larry Correia
- 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
- Vince Danks
- Richard Dansky
- Steve Danuser
- Alexander Dan Vilhjálmsson
- Ellen Datlow
- 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
- Jose Delbo
- KJ Dell'Antonia
- Guillermo del Toro
- Elisabeth de Mariaffi
- Louie de Martinis
- Kristi DeMeester
- Brendan Deneen
- Troy Denning
- G. S. Denning
- Will Dennis
- Kara Dennison
- O'Neil De Noux
- Lester Dent
- Bradley Denton
- Tracy Deonn
- Brian De Palma
- August Derleth
- Joe Desris
- Rebecca Dessertine
- Michael De Vito, Jr.
- Junot Diaz
- William C. Dietz
- Paul Di Filippo
- Francesco Dimitri
- Paul Dini
- Richard Dinnick
- Karen Dionne
- Ashley Dioses
- Roman Dirge
- D’Israeli
- S.B. Divya
- Larry Dixon
- Cory Doctorow
- David Dodge
- Sharon Doering
- Alexa Donne
- Fran Dorricott
- Stuart Douglas
- Terry Dowling
- A. C. Doyle
- Gardner Dozois
- J. M. Dragunas
- David Drake
- Temple Drake