- C. Bland, Michael
- Caldecott, Andrew
- Caltabiano, Anna
- Camp, Bryan
- Campbell, Chris
- Campbell, Jack
- Campbell, John W
- Campbell, Ramsey
- Cannon, Geonn
- Cantero, Edgar
- Capek, Karel
- Capshaw, Ron
- Card, Orson Scott
- Carew, Leo
- Cargill, C Robert
- Carlton, Clark Thomas
- Carroll, Jonathan
- Carter, Angela
- Cartwright, Beth
- Caselberg, Jay
- Cashore, Kristin
- Cassidy, Nat
- Castaldo, Pat
- Castro, V
- Cato, Beth
- Cave, Holly
- Cave, Paul
- Cavendish, Catherine
- Cawdron, Peter
- Chabon, Michael
- Chadbourn, Mark
- Chalker, Jack L
- Chambers, Andy
- Chambers, Becky
- Chen, Mike
- Cheung, Anna
- Chima, Cinda Williams
- Chinn, Michael
- Chivers, Greg
- Chong, Jinwoo
- Chowdhury, Ajay
- Choyeop, Kim
- Christopher, Adam
- Christopher, John
- Chronister, Kay
- Chung, Bora
- Church, Daniel
- Church, T S
- Churcher-Muria, David
- Cixin, Liu
- Clare, Cassandra
- Clark, Jack
- Clark, Simon
- Clark, Stuart
- Clarke, Arthur C
- Clarke, Susanna
- Cline, Ernest
- Cluley, Ray
- Cogman, Genevieve
- Coile, Mason
- Colchamiro, Russ
- Cole, Myke
- Cole, Stephen
- Colfer, Eoin
- Collins, Lee
- Coman, Marian
- Conner, Walter C
- Connor, David
- Cooper, Elspeth
- Cooper, JS
- Cornell, Paul
- Cosby, Braxton A
- Costa, Mariana
- Counhan, Elizabeth
- Counter, Ben
- Cowper, Richard
- Cox, Edward
- Cox, Stephen
- Coxon, Dan
- Cressey, John
- Crichton, Michael
- Crittendon, Denise
- Cronin, Justin
- Crouch, Blake
- Crutchley, Nicholas Boyd