C
- Martin Campbell-Kelly – history of computing
- Luca Cardelli – objects
- Claire Cardie – natural language processing, automatic summarization, machine learning
- Edwin Catmull – computer graphics
- Vinton Cerf – Internet, TCP/IP
- Gregory Chaitin
- Zhou Chaochen – duration calculus
- Peter Chen – entity-relationship model, data modeling, conceptual model
- Xiuzhen (Susan) Cheng – computer networks
- Alonzo Church – mathematics of combinators, lambda calculus
- Gabriel Ciobanu – semantics, process calculi, membrane computing
- Edmund M. Clarke – model checking
- John Cocke – RISC
- Edgar F. Codd (1923–2003) – formulated the database relational model
- Simon Colton – computational creativity
- Paul Justin Compton – Ripple Down Rules
- Gordon Cormack – co-inventor of dynamic Markov compression
- Stephen Cook – NP-completeness
- James Cooley – Fast Fourier transform (FFT)
- Fernando J. Corbató – Compatible Time-Sharing System (CTSS), Multics
- Patrick Cousot – abstract interpretation
- Seymour Cray – Cray Research, supercomputer
- Nello Cristianini – Machine learning, pattern analysis, artificial intelligence
- W. Bruce Croft
- Haskell Curry
Read more about this topic: List Of Computer Scientists