Authors
- Ernest Cline
- Lyndall Clipstone
- Ray Cluley
- David B. Coe
- Genevieve Cogman
- David S. Cohen
- Tomm Coker
- Adrian Cole
- Simon Coleby
- Bennett R. Coles
- Nancy Collins
- Joe Colquhoun
- Neville Colvin
- Titan Comics
- Iris Compiet
- Robbie Conal
- 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
- Mark Cotta Vaz
- Colin Cotterill
- Ted Cowan
- Greg Cox
- Dan Coxon
- Elena Craig
- Luke Crane
- M. W. Craven
- Michael Crichton writing as John Lange
- A.C. Crispin
- Ben Croll
- Mason Cross
- 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 Davis
- Milton J. 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
- Guillermo del Toro
- Elisabeth de Mariaffi
- Louie de Martinis
- Brendan Deneen
- Troy Denning
- G. S. Denning
- Will Dennis
- Kara Dennison
- O'Neil De Noux
- Lester Dent
- Bradley Denton
- 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
- A. C. Doyle
- Gardner Dozois
- J. M. Dragunas
- David Drake
- Temple Drake
- Dreamworks Animation artists
- Ron Drummond
- Diane Duane
- Martin Dubeau
- Tananarive Due
- Stella Duffy
- Mercenary of Duna
- Jody Duncan
- Brandon Easton
- Jason C. Eckhardt
- Ashley Eckstein
- Martin Eden
- Eric Eden
- Ian Edginton
- WWE Editors
- Ben Edlund
- Neo Edmund
- Patrick Edwards
- Martin Edwards
- Tommy Lee Edwards
- Greg van Eekhout
- Terence James Eeles
- George Alec Effinger
- Matt Egan
- Phyllis Eisenstein
- Warren Ellis
- Lindsay Ellis
- Harlan Ellison
- R. J. Ellory
- A.J. Elwood
- Chịkọdịlị Emelumadu
- Jill Emerson
- Carol Emshwiller
- M.K. England
- Garth Ennis