Authors
- Cain, James M.
- Cauffiel, Lowell
- Caunitz, William J.
- Charyn, Jerome
- Chesbro, George C.
- Chesterton, G. K.
- Childers, Erskine
- Christie, Agatha
- Coffey, Joseph
- Cole, William
- Coleman, Reed Farrel (also known as: Tony Spinosa)
- Collins, Wilkie
- Collins, Max Allan
- Condon, Richard
- Connolly, John
- Conrad, Joseph
- Cook, Thomas H.
- Cooper, Mike
- Corbett, David
- Coxe, George H.
