- CABELL, James Branch
- CACEK, P. D.
- CADE, Octavia
- CADIGAN, Pat
- CADY, Jack
- CAINE, Rachel
- CALDECOTT, Andrew
- CALDER, Richard
- CALLAHAN, George
- CAMBIAS, James L.
- CAMPBELL, Alan
- CAMPBELL, Jack
- CAMPBELL, John, Jr.
- CAMPBELL, Ramsey
- CAMPBELL, Rebecca
- CAMPISI, Stephanie
- CAMPTON, David
- CANAVAN, Trudi
- CANCILLA, Dominick
- CANFIELD, Michael
- CANTRELL, Lisa W.
- CARAVAN, T. P.
- CARD, Orson Scott
- CAREY, Diane
- CAREY, Jacqueline
- CARGILL, C. Robert
- CARLSON, Jeff
- CARO Dennis R.
- CARPENTER, Humphrey
- CARPENTER, Leonard P.
- CARR, Jayge
- CARR, Robyn
- CARR, Terry
- CARROLL, Jonathan
- CARROLL, Siobhan
- CARTER, Angela
- CARTER, Carmen
- CARTER, Lin
- CARTER, Robert
- CARTER, Tonya R.
- CARTMILL, Clive
- CARTUR, Peter
- CASE, David
- CASHMAN, Paul W.
- CASHORE, Kristin
- CASIL, Amy Sterling
- CASSILL, R. V.
- CASTELL, Daphne
- CASTLE, Ralph T.
- CASTRO, Adam-Troy
- CASTRO, V.
- CATANI, Vittorio
- CAVE, Hugh B.
- CIENCIN, Scott
- CLARK, Phenderson Djèlí
- CLARK, Simon
- CLARKE, Arthur C.
- CLARKE, J. Brian
- CLARKE, Susanna
- CLEGG, Douglas
- CLEMENT, Hal
- CLINE, Ernest
- CLINGERMAN, Mildred
- CLOUGH, B. W.
- COBB, James
- COBLEY, Michael
- COCKAYNE, Steve
- COE, David B.
- COGSWELL, Theodore R.
- COLE, Allan
- COLE, Myke
- COLEMAN, Loren L.
- COLIN, Vladimir
- COLLIER, John
- COLLINS, Bridget
- COLLINS, Max Allan
- COLLINS, Nancy A.
- COMEAU, J. L.
- CONEY, Michael G.
- CONLEY, Rick
- CONNER, Mike
- CONNOLLY, Jim
- COOK, Diane
- COOK, Glen
- COOK, Matthew
- COOK, Robin
- COONTS, Stephen
- COPPER, Basil
- COPPERFIELD David
- COREY, James S. A.
- CORNELL, Paul
- CORRADI, Matthew
- CORREIA, Larry
- COSTELLO, Matthew J.
- COULSON, Robert
- COUNIHAN, Elizabeth
- COUNTER, Ben
- COWDREY, Albert E.
- COWEN, Malcolm
- COWPER, Richard
- COYLE, Harold
- COYNE, John
- CRAGG, Dan
- CRAIG, A. A.
- CRAIG, Brian
- CREASEY, John
- CRIDER, Bill
- CRICHTON, Michael
- CRISPIN, Ann C.
- CROHMĂLNICEANU, Ovid S.
- CRONA, Börje
- CRONIN, Justin
- CROSS, Gilian
- CROSS, James
- CROSS, Ronald Anthony
- CROSSHILL, Tom
- CROUCH, Blake
- CROWLEY, John
- CROWTHER, Peter
- CRYSTAL, Billy
- CSERNAI, Zoltán
- CUCUI, Jasutaka
- CUMMINGS, Ray
- CUNNINGHAM, Elaine
- CURRAN, Jonathan
- CURRIE, Evan
- CURTIS, Betsy
- CURTIS, Craig
- CURVAL, Philippe
- CUSHING, Nicole
- CYGANOV, Valerij
- CYPESS, Leah
- CZECHOWSKI, Andrzej
- ČERVENÁK, Juraj
- ČCHEN Čchiou-fan [=Chen Qiufan]
- ČUDAKOVA, Marietta
- ĆWIEK, Jakub